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Recent progress in the interfacial polymerization process for CO2 separation membrane fabrication 用于制造二氧化碳分离膜的界面聚合工艺的最新进展
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-20 DOI: 10.1007/s11705-024-2510-5
Zhijie Shang, Qiangqiang Song, Bin Han, Jing Ma, Dongyang Li, Cancan Zhang, Xin Li, Jinghe Yang, Junyong Zhu, Wenpeng Li, Jing Wang, Yatao Zhang
{"title":"Recent progress in the interfacial polymerization process for CO2 separation membrane fabrication","authors":"Zhijie Shang,&nbsp;Qiangqiang Song,&nbsp;Bin Han,&nbsp;Jing Ma,&nbsp;Dongyang Li,&nbsp;Cancan Zhang,&nbsp;Xin Li,&nbsp;Jinghe Yang,&nbsp;Junyong Zhu,&nbsp;Wenpeng Li,&nbsp;Jing Wang,&nbsp;Yatao Zhang","doi":"10.1007/s11705-024-2510-5","DOIUrl":"10.1007/s11705-024-2510-5","url":null,"abstract":"<div><p>Nowadays, global warming caused by the increasing levels of CO<sub>2</sub> has become a serious environmental problem. Membrane separation technology has demonstrated its promising potential in carbon capture due to its easy operation, energy-efficientness and high efficiency. Interfacial polymerization process, as a facile and well-established technique for preparing membranes with a thin selective layer, has been widely used for fabricating commercial reverse osmosis and nanofiltration membranes in water treatment domain. To push forward such an interfacial polymerization process in the research of CO<sub>2</sub> separation membranes, herein we make a review on the regulation and research progress of the interfacial polymerization membranes for CO<sub>2</sub> separation. First, a comprehensive and critical review of the progress in the monomers, nanoparticles and interfacial polymerization process optimization for preparing CO<sub>2</sub> separation membrane is presented. In addition, the potential of molecular dynamics simulation and machine learning in accelerating the screen and design of interfacial polymerization membranes for CO<sub>2</sub> separation are outlined. Finally, the possible challenges and development prospects of CO<sub>2</sub> separation membranes by interfacial polymerization process are proposed. It is believed that this review can offer valuable insights and guidance for the future advancement of interfacial polymerization membranes for CO<sub>2</sub> separation, thereby fostering its development.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reversible heat-set four-phase transitions of gel1-to-sol1-to-gel2-to-sol2 in binary hydrogels 二元水凝胶中凝胶1-溶胶1-凝胶2-溶胶2的可逆热固四相转变
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-19 DOI: 10.1007/s11705-024-2501-6
Mengjiao Liang, Wenwen Cao, Yaodong Huang
{"title":"Reversible heat-set four-phase transitions of gel1-to-sol1-to-gel2-to-sol2 in binary hydrogels","authors":"Mengjiao Liang,&nbsp;Wenwen Cao,&nbsp;Yaodong Huang","doi":"10.1007/s11705-024-2501-6","DOIUrl":"10.1007/s11705-024-2501-6","url":null,"abstract":"<div><p>A class of supramolecular binary hydrogels is formed from dodecylamine or tridecylamine and sparing carboxylic acids (with amine/acid molar ratio ⩾ 18). These hydrogels exhibit a remarkable thermally reversible four-phase transition. On heating, they transition from gel one (G<sup>1</sup>)-to-sol one (Sol<sup>1</sup>), then to gel two (G<sup>2</sup>)-to-sol two (Sol<sup>2</sup>). On cooling, they revert from Sol<sup>2</sup>-to-G<sup>2</sup>-to-Sol<sup>1</sup>-to-G<sup>1</sup>. Additionally, several G<sup>1</sup> and G<sup>2</sup> hydrogels undergo thermally reversible gel-to-gel phase transitions, which are reflected by translucent-opaque and opaque-translucent changes in their appearance. The nature of the four-phase transformation was analyzed using a range of techniques. Scanning electron microscopy images confirmed that the fibers of the opaque hydrogel at high temperatures were considerably larger than those of its translucent counterpart at low temperatures. Fluorescence emission spectra demonstrated that higher temperatures, higher amine/acid ratios, and greater acid hydrophobicity increased the hydrophobic interactions. Fourier transform infrared spectroscopy and ultraviolet-visible spectroscopic analyses confirmed the existence of hydrogen-bonding interactions and aggregation in the hydrogels. X-ray diffraction profiles indicated that the hydrogels adopt lamellar structures. The findings advance our current understanding of the phase transition of supramolecular gels and facilitate the constitution of binary or multicomponent gels, providing a practical way to create new smart functional materials.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"18 12","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic technologies for a circular economy: upcycling waste plastics and biomass 循环经济的协同技术:废塑料和生物质的升级再造
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-15 DOI: 10.1007/s11705-024-2507-0
Ahmed I. Osman, Mahmoud Nasr, Chukwunonso O. Aniagor, Mohamed Farghali, Mee Mee Huang, Bridgid Lai Fui Chin, Ziqiang Sun, Serene Sow Mun Lock, Eduardo A. López-Maldonado, Chung Loong Yiin, Charles E. Chinyelu, Abid Salam Farooqi, Zhonghao Chen, Pow-Seng Yap
{"title":"Synergistic technologies for a circular economy: upcycling waste plastics and biomass","authors":"Ahmed I. Osman,&nbsp;Mahmoud Nasr,&nbsp;Chukwunonso O. Aniagor,&nbsp;Mohamed Farghali,&nbsp;Mee Mee Huang,&nbsp;Bridgid Lai Fui Chin,&nbsp;Ziqiang Sun,&nbsp;Serene Sow Mun Lock,&nbsp;Eduardo A. López-Maldonado,&nbsp;Chung Loong Yiin,&nbsp;Charles E. Chinyelu,&nbsp;Abid Salam Farooqi,&nbsp;Zhonghao Chen,&nbsp;Pow-Seng Yap","doi":"10.1007/s11705-024-2507-0","DOIUrl":"10.1007/s11705-024-2507-0","url":null,"abstract":"<div><p>The urgent need for sustainable waste management has led to the exploration of upcycling waste plastics and biomass as viable solutions. In 2018, global plastic production reached 359 million tonnes, with an estimated 12000 million tonnes projected to be delivered and disposed of in landfills by 2050. Unfortunately, current waste management practices result in only 19.5% of plastics being recycled, while the rest is either landfilled (55%) or incinerated (25.5%). The improper disposal of plastics contributes to issues such as soil and groundwater contamination, air pollution, and wildlife disturbance. On the other hand, biomass has the potential to deliver around 240 exajoules of energy per year by 2060. However, its current utilization remains relatively small, with only approximately 9% of biomass-derived energy being consumed in Europe in 2017. This review explores various upcycling methods for waste plastics and biomass, including mechanical, chemical, biological, and thermal approaches. It also highlights the applications of upcycled plastics and biomass in sectors such as construction, packaging, energy generation, and chemicals. The environmental and economic benefits of upcycling are emphasized, including the reduction of plastic pollution, preservation of natural resources, carbon footprint reduction, and circular economy advancement.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11705-024-2507-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced C3H6/C3H8 separation performance in polysulfone membrane blended with rigid ZIF-8 crystals 增强聚砜膜与硬质 ZIF-8 结晶体的 C3H6/C3H8 分离性能
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-15 DOI: 10.1007/s11705-024-2504-3
Jiayu Luo, Luxi Lyu, Zongjie Yin, Yanying Wei
{"title":"Enhanced C3H6/C3H8 separation performance in polysulfone membrane blended with rigid ZIF-8 crystals","authors":"Jiayu Luo,&nbsp;Luxi Lyu,&nbsp;Zongjie Yin,&nbsp;Yanying Wei","doi":"10.1007/s11705-024-2504-3","DOIUrl":"10.1007/s11705-024-2504-3","url":null,"abstract":"<div><p>Metal-organic frameworks have a wide range of applications in the field of membrane separation, but the inherent flexible structure and the difficulty for scale-up hinder their further applications. Herein, the relatively rigid zeolitic imidazolate framework-8 particles prepared under an electric field (E-ZIF-8) were used as the fillers in polysulfone (PSF) to form series of mixed matrix membranes. It was found that the introduction of E-ZIF-8 improves both the C<sub>3</sub>H<sub>6</sub> permeability and C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> selectivity of the membranes. Compared with the bare PSF membrane, the C<sub>3</sub>H<sub>6</sub>/C<sub>3</sub>H<sub>8</sub> selectivity of the 30 wt % E-ZIF-8@PSF membrane increased by ∼230%, while the C<sub>3</sub>H<sub>6</sub> permeability was enhanced by ∼830%. In addition, time and pressure dependence analysis demonstrated that such E-ZIF-8@PSF membranes also exhibited good long-term stability and pressure resistance, offering significant industrialization advantages.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating CO2 electro-reduction mechanisms: DFT insight into earth-abundant Mn diimine catalysts for CO2 conversions over hydrogen evolution reaction, feasibility, and selectivity considerations 研究二氧化碳电还原机制:通过氢气进化反应、可行性和选择性考虑,对二氧化碳转化的富土二亚胺锰催化剂进行 DFT 深入研究
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-13 DOI: 10.1007/s11705-024-2502-5
Murugesan Panneerselvam, Marcelo Albuquerque, Iuri Soter Viana Segtovich, Frederico W. Tavares, Luciano T. Costa
{"title":"Investigating CO2 electro-reduction mechanisms: DFT insight into earth-abundant Mn diimine catalysts for CO2 conversions over hydrogen evolution reaction, feasibility, and selectivity considerations","authors":"Murugesan Panneerselvam,&nbsp;Marcelo Albuquerque,&nbsp;Iuri Soter Viana Segtovich,&nbsp;Frederico W. Tavares,&nbsp;Luciano T. Costa","doi":"10.1007/s11705-024-2502-5","DOIUrl":"10.1007/s11705-024-2502-5","url":null,"abstract":"<div><p>This study investigates the detailed mechanism of CO<sub>2</sub> conversion to CO using the manganese(I) diimine electrocatalyst [Mn(pyrox)(CO)<sub>3</sub>Br], synthesized by Christoph Steinlechner and coworkers. Employing density functional theory calculations, we thoroughly explore the electrocatalytic pathway of CO<sub>2</sub> reduction alongside the competing hydrogen evolution reaction. Our analysis reveals the significant role of diimine nitrogen coordination in enhancing the electron density of the Mn center, thereby favoring both CO<sub>2</sub> reduction and hydrogen evolution reaction thermodynamically. Furthermore, we observe that triethanolamine (TEOA) stabilizes transition states, aiding in CO<sub>2</sub> fixation and reduction. The critical steps influencing the reaction rate involve breaking the MnC(O)–OH bond during CO<sub>2</sub> reduction and cleaving the MnH–H–TEOA bond in the hydrogen evolution reaction. We explain the preference for CO<sub>2</sub> conversion to CO over H<sub>2</sub> evolution due to the higher energy barrier in forming the Mn-H<sub>2</sub> species during H<sub>2</sub> production. Our findings suggest the potential for tuning the electron density of the Mn center to enhance reactivity and selectivity in CO<sub>2</sub> reduction. Additionally, we analyze potential competing reactions, focusing on electrocatalytic processes for CO<sub>2</sub> reduction and evaluating “protonation-first” and “reduction-first” pathways through density functional theory calculations of redox potentials and Gibbs free energies. This analysis indicates the predominance of the “reduction-first” pathway in CO production, especially under high applied potential conditions. Moreover, our research highlights the selectivity of [Mn(pyrox)(CO)<sub>3</sub>Br] toward CO production over HCOO<sup>−</sup> and H<sub>2</sub> formation, proposing avenues for future research to expand upon these findings by using larger basis sets and exploring additional functionalized ligands.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"18 12","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chemical recycling of polyolefin waste: from the perspective of efficient pyrolysis reactors 聚烯烃废料的化学循环利用:从高效热解反应器的角度看问题
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-10 DOI: 10.1007/s11705-024-2498-x
Weiqiang Gao, Yinlong Chang, Qimin Zhou, Qingyue Wang, Khak Ho Lim, Deliang Wang, Jijiang Hu, Wen-Jun Wang, Bo-Geng Li, Pingwei Liu
{"title":"Chemical recycling of polyolefin waste: from the perspective of efficient pyrolysis reactors","authors":"Weiqiang Gao,&nbsp;Yinlong Chang,&nbsp;Qimin Zhou,&nbsp;Qingyue Wang,&nbsp;Khak Ho Lim,&nbsp;Deliang Wang,&nbsp;Jijiang Hu,&nbsp;Wen-Jun Wang,&nbsp;Bo-Geng Li,&nbsp;Pingwei Liu","doi":"10.1007/s11705-024-2498-x","DOIUrl":"10.1007/s11705-024-2498-x","url":null,"abstract":"<div><p>Polyolefins, widely used for packaging, construction, and electronics, facilitate daily life but cause severe environmental pollution when discarded after usage. Chemical recycling of polyolefins has received widespread attention for eliminating polyolefin pollution, as it is promising to convert polyolefin wastes to high-value chemicals (e.g., fuels, light olefins, aromatic hydrocarbons). However, the chemical recycling of polyolefins typically involves high-viscosity, high-temperature and high-pressure, and its efficiency depends on the catalytic materials, reaction conditions, and more essentially, on the reactors which are overlooked in previous studies. Herein, this review first introduces the mechanisms and influencing factors of polyolefin waste upcycling, followed by a brief overview of <i>in situ</i> and <i>ex situ</i> processes. Emphatically, the review focuses on the various reactors used in polyolefin recycling (i.e., batch/semi-batch reactor, fixed bed reactor, fluidized bed reactor, conical spouted bed reactor, screw reactor, molten metal bed reactor, vertical falling film reactor, rotary kiln reactor and microwave-assisted reactor) and their respective merits and demerits. Nevertheless, challenges remain in developing highly efficient reacting techniques to realize the practical application. In light of this, the review is concluded with recommendations and prospects to enlighten the future of polyolefin upcycling.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"18 12","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DFT insights into oxygen vacancy formation and chemical looping dry reforming of methane on metal-substituted CeO2 (111) surface DFT 对金属取代 CeO2 (111) 表面氧空位形成和甲烷化学循环干重整的见解
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-10 DOI: 10.1007/s11705-024-2513-2
Mingyi Chen, Zeshan Wang, Yuelun Li, Yuxin Wang, Lei Jiang, Huicong Zuo, Linan Huang, Yuhao Wang, Dong Tian, Hua Wang, Kongzhai Li
{"title":"DFT insights into oxygen vacancy formation and chemical looping dry reforming of methane on metal-substituted CeO2 (111) surface","authors":"Mingyi Chen,&nbsp;Zeshan Wang,&nbsp;Yuelun Li,&nbsp;Yuxin Wang,&nbsp;Lei Jiang,&nbsp;Huicong Zuo,&nbsp;Linan Huang,&nbsp;Yuhao Wang,&nbsp;Dong Tian,&nbsp;Hua Wang,&nbsp;Kongzhai Li","doi":"10.1007/s11705-024-2513-2","DOIUrl":"10.1007/s11705-024-2513-2","url":null,"abstract":"<div><p>The oxygen vacancy formation energy and chemical looping dry reforming of methane over metal-substituted CeO<sub>2</sub> (111) are investigated based on density functional theory calculations. The calculated results indicate that among the various metals that can substitute for the Ce atom in the CeO<sub>2</sub>(111) surface, Zn substitution results in the lowest oxygen vacancy formation energy. For the activation of CH<sub>4</sub> on CeO<sub>2</sub> (111) and Zn-substituted CeO<sub>2</sub> (111) surfaces, the calculated results illustrate that the dissociation process of CH<sub>3(ads)</sub> is very difficult on pristine surfaces and unfavorable for CHO<sub>(ads)</sub> on substituted surfaces. Furthermore, the dissociative adsorption of CO and H<sub>2</sub> on the Zn-substituted CeO<sub>2</sub> (111) surface requires high energy, which is unfavorable for syngas production. This work demonstrates that excessive formation of oxygen vacancy can lead to excessively high adsorption energies, thus limiting the conversion efficiency of the reaction intermediates. This finding provides important guidance and application prospects for the design and optimization of oxygen carrier materials, especially in the field of chemical looping dry methane reforming to syngas.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"18 12","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142254759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Machine learning meets enzyme engineering: examples in the design of polyethylene terephthalate hydrolases 机器学习与酶工程的结合:聚对苯二甲酸乙二醇酯水解酶设计实例
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-10 DOI: 10.1007/s11705-024-2500-7
Rohan Ali, Yifei Zhang
{"title":"Machine learning meets enzyme engineering: examples in the design of polyethylene terephthalate hydrolases","authors":"Rohan Ali,&nbsp;Yifei Zhang","doi":"10.1007/s11705-024-2500-7","DOIUrl":"10.1007/s11705-024-2500-7","url":null,"abstract":"<div><p>The trend of employing machine learning methods has been increasing to develop promising biocatalysts. Leveraging the experimental findings and simulation data, these methods facilitate enzyme engineering and even the design of new-to-nature enzymes. This review focuses on the application of machine learning methods in the engineering of polyethylene terephthalate (PET) hydrolases, enzymes that have the potential to help address plastic pollution. We introduce an overview of machine learning workflows, useful methods and tools for protein design and engineering, and discuss the recent progress of machine learning-aided PET hydrolase engineering and <i>de novo</i> design of PET hydrolases. Finally, as machine learning in enzyme engineering is still evolving, we foresee that advancements in computational power and quality data resources will considerably increase the use of data-driven approaches in enzyme engineering in the coming decades.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"18 12","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparative analysis of aromatic compounds steam reforming over Rh supported on γ-Al2O3 γ-Al2O3负载Rh上芳香族化合物蒸汽重整的对比分析
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-06 DOI: 10.1007/s11705-024-2514-1
Marinela D. Zhurka, Panagiotis N. Kechagiopoulos
{"title":"Comparative analysis of aromatic compounds steam reforming over Rh supported on γ-Al2O3","authors":"Marinela D. Zhurka,&nbsp;Panagiotis N. Kechagiopoulos","doi":"10.1007/s11705-024-2514-1","DOIUrl":"10.1007/s11705-024-2514-1","url":null,"abstract":"<div><p>The steam reforming of bio-oil can provide a sustainable means to produce hydrogen, while tar steam reforming can significantly enhance the efficiency of the biomass gasification process. Bio-oils and tars are highly complex mixtures, and while there has been extensive research on the reforming of small oxygenates and aliphatic hydrocarbons, there have been comparatively much less studies on aromatics reforming. In the current work, we present a comparative study of the steam reforming of hydroquinone, benzyl alcohol and toluene, selected as model compounds of the aromatic fraction of bio-oils and tars with different functional groups. The effect of temperature, partial pressure of reactants, and contact time is studied over a Rh catalyst supported on <i>γ</i>-Al<sub>2</sub>O<sub>3</sub>. Across the range of conditions studied, hydroquinone is found to be more reactive, followed by benzyl alcohol, and, lastly, toluene. The differences are attributed to the presence of hydroxyl groups in the case of the former two compounds, versus a methyl group in the case of toluene, effectively correlating activity with the O/C ratio in the compounds’ molecule. Nonetheless, similar pathways are observed, with methane, benzene, naphthalene and toluene (during hydroquinone and benzyl alcohol reforming) detected as products in addition to carbon oxides and hydrogen.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11705-024-2514-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Screening techniques as a preliminary diagnostic tool for advanced oxidative processes on a laboratory scale 筛选技术作为实验室规模上高级氧化过程的初步诊断工具
IF 4.3 3区 工程技术
Frontiers of Chemical Science and Engineering Pub Date : 2024-09-06 DOI: 10.1007/s11705-024-2517-y
Larissa Pinheiro de Souza, Flávio Olimpio Sanches-Neto, Júlio César de Oliveira Ribeiro, Bruno Ramos, Valter H. Carvalho-Silva, Antonio Carlos Silva Costa Teixeira
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