Frontiers of Chemical Science and Engineering最新文献_第10页

Microwave-assisted pyrolysis of plastics for aviation oil production: energy and economic analyses 微波辅助热解塑料生产航空油：能源和经济分析

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-26 DOI: 10.1007/s11705-024-2436-y

Sichen Fan, Yifan Liu, Yaning Zhang, Wenke Zhao, Chunbao Xu

{"title":"Microwave-assisted pyrolysis of plastics for aviation oil production: energy and economic analyses","authors":"Sichen Fan, Yifan Liu, Yaning Zhang, Wenke Zhao, Chunbao Xu","doi":"10.1007/s11705-024-2436-y","DOIUrl":"10.1007/s11705-024-2436-y","url":null,"abstract":"<div><p>Microwave-assisted pyrolysis is an effective method for recycling plastic wastes into oils that can be used for aviation fuels. In this study, energy and economic analyses of aviation oil production from microwave-assisted pyrolysis of polystyrene were performed. The total energy efficiency, recovered energy efficiency, unitary cost, unitary energy economic cost, relative cost difference, and energy economic factor were detailed. And the effects of microwave power, pyrolysis temperature, microwave absorbent loading, and microwave absorbent type on these parameters were covered. It was found that pyrolysis temperature has the most significant effect on the unitary cost and unitary energy economic cost of aviation oil, and- microwave absorbent type has a significant influence on energy economic factor during the whole microwave-assisted pyrolysis process. The optimum reaction conditions at the tonnage system for pyrolysis of 1 t polystyrene were microwave power of 650 W, pyrolysis temperature of 460 °C, and silicon carbide (microwave absorbent) at a loading of 2 t (twice than feedstock loading). At these optimal conditions, the total energy efficiency, recovered energy efficiency, unitary cost, unitary energy economic cost, relative cost difference, and energy economic factor were 62.78%, 96.51%, 3.21 × 10<sup>4</sup> yuan·t<sup>−1</sup>, 779 yuan·GJ<sup>−1</sup>, 1.49, and 71.02%, respectively.</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 7","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141171247","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

Propane dehydro-aromatization reaction over PtFe@S-1 coupling with Zn/ZSM-5 tandem catalysts: the role of Zn species PtFe@S-1 与 Zn/ZSM-5 串联催化剂上的丙烷脱氢芳构化反应：Zn 物种的作用

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-22 DOI: 10.1007/s11705-024-2440-2

Kai Bian, Sirui Liu, Huahua Fan, Guanghui Zhang, Xinwei Zhang, Gideon Abaidoo Ocran, Mingrui Wang, Quanjie Liu, Xiaowa Nie, Shuandi Hou, Xinwen Guo

引用次数: 0

Surface engineering with ionic polymers on membranes for boron removal 利用离子聚合物对除硼膜进行表面工程处理

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-17 DOI: 10.1007/s11705-024-2413-5

Xiting Zhang, Chenyi Fang, J. Paul Chen, Sui Zhang

{"title":"Surface engineering with ionic polymers on membranes for boron removal","authors":"Xiting Zhang, Chenyi Fang, J. Paul Chen, Sui Zhang","doi":"10.1007/s11705-024-2413-5","DOIUrl":"10.1007/s11705-024-2413-5","url":null,"abstract":"<div><p>Removal of boric acid from seawater and wastewater using reverse osmosis membrane technologies is imperative and yet remains inadequately addressed by current commercial membranes. Existing research efforts performed post-modification of reverse osmosis membranes to enhance boron rejection, which is usually accompanied by substantial sacrifice in water permeability. This study delves into the surface engineering of low-pressure reverse osmosis membranes, aiming to elevate boron removal efficiency while maintaining optimal salt rejection and water permeability. Membranes were modified by the self-polymerization and co-deposition of dopamine and polystyrene sulfonate at varying ratios and concentrations. The surfaces became smoother and more hydrophilic after modification. The optimum membrane exhibited a water permeability of 9.2 ± 0.1 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup>, NaCl rejection of 95.8% ± 0.3%, and boron rejection of 49.7% ± 0.1% and 99.6% ± 0.3% at neutral and alkaline pH, respectively. The water permeability is reduced by less than 15%, while the boron rejection is 3.7 times higher compared to the blank membrane. This research provides a promising avenue for enhancing boron removal in reverse osmosis membranes and addressing water quality concerns in the desalination process.</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 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140693592","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

Advancing oxygen separation: insights from experimental and computational analysis of La0.7Ca0.3Co0.3Fe0.6M0.1O3−δ (M = Cu, Zn) oxygen transport membranes 推进氧气分离：对 La0.7Ca0.3Co0.3Fe0.6M0.1O3-δ（M = 铜、锌）氧气传输膜的实验和计算分析的启示

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-15 DOI: 10.1007/s11705-024-2421-5

Guoxing Chen, Wenmei Liu, Marc Widenmeyer, Xiao Yu, Zhijun Zhao, Songhak Yoon, Ruijuan Yan, Wenjie Xie, Armin Feldhoff, Gert Homm, Emanuel Ionescu, Maria Fyta, Anke Weidenkaff

{"title":"Advancing oxygen separation: insights from experimental and computational analysis of La0.7Ca0.3Co0.3Fe0.6M0.1O3−δ (M = Cu, Zn) oxygen transport membranes","authors":"Guoxing Chen, Wenmei Liu, Marc Widenmeyer, Xiao Yu, Zhijun Zhao, Songhak Yoon, Ruijuan Yan, Wenjie Xie, Armin Feldhoff, Gert Homm, Emanuel Ionescu, Maria Fyta, Anke Weidenkaff","doi":"10.1007/s11705-024-2421-5","DOIUrl":"10.1007/s11705-024-2421-5","url":null,"abstract":"<div><p>In this study, perovskite-type La<sub>0.7</sub>Ca<sub>0.3</sub>Co<sub>0.3</sub> Fe<sub>0.6</sub>M<sub>0.1</sub>O<sub>3−<i>δ</i></sub> (M = Cu, Zn) powders were synthesized using a scalable reverse co-precipitation method, presenting them as novel materials for oxygen transport membranes. The comprehensive study covered various aspects including oxygen permeability, crystal structure, conductivity, morphology, CO<sub>2</sub> tolerance, and long-term regenerative durability with a focus on phase structure and composition. The membrane La<sub>0.7</sub>Ca<sub>0.3</sub>Co<sub>0.3</sub>Fe<sub>0.6</sub>Zn<sub>0.1</sub>O<sub>3</sub><sub>−<i>δ</i></sub> exhibited high oxygen permeation fluxes, reaching up to 0.88 and 0.64 mL·min<sup>−1</sup>cm<sup>−2</sup> under air/He and air/CO<sub>2</sub> gradients at 1173 K, respectively. After 1600 h of CO<sub>2</sub> exposure, the perovskite structure remained intact, showcasing superior CO<sub>2</sub> resistance. A combination of first principles simulations and experimental measurements was employed to deepen the understanding of Cu/Zn substitution effects on the structure, oxygen vacancy formation, and transport behavior of the membranes. These findings underscore the potential of this highly CO<sub>2</sub>-tolerant membrane for applications in high-temperature oxygen separation. The enhanced insights into the oxygen transport mechanism contribute to the advancement of next-generation membrane materials.\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 6","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140570645","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

Insight into the adsorption behavior and mechanism of trace impurities from H2O2 solution on functionalized zirconia by tuning the structure of amino groups 通过调整氨基结构深入了解 H2O2 溶液中的痕量杂质在功能化氧化锆上的吸附行为和机理

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-15 DOI: 10.1007/s11705-024-2415-3

Yu Meng, Yitong Wang, Guozhu Li, Guozhu Liu, Li Wang

{"title":"Insight into the adsorption behavior and mechanism of trace impurities from H2O2 solution on functionalized zirconia by tuning the structure of amino groups","authors":"Yu Meng, Yitong Wang, Guozhu Li, Guozhu Liu, Li Wang","doi":"10.1007/s11705-024-2415-3","DOIUrl":"10.1007/s11705-024-2415-3","url":null,"abstract":"<div><p>Primary, secondary and tertiary amino-functionalized zirconia (ZrO<sub>2</sub>−NH<sub>2</sub>, ZrO<sub>2</sub>−NH and ZrO<sub>2</sub>−N) was synthesized by the postgrafting method for the adsorption removal of typical metallic ions, phosphate and total oxidizable carbon from a real H<sub>2</sub>O<sub>2</sub> solution. ZrO<sub>2</sub>−NH<sub>2</sub>, ZrO<sub>2</sub>−NH and ZrO<sub>2</sub>−N exhibited similar pore sizes and sequentially increased zeta potentials. The adsorption results of single and binary simulated solutions showed that the removal efficiency increased in the order of Fe<sup>3+</sup> > Al<sup>3+</sup> > Ca<sup>2+</sup> > Na<sup>+</sup>. There is competitive adsorption between metallic ions, and Fe<sup>3+</sup> has an advantage over the other metals, with a removal efficiency of 90.7%. The coexisting phosphate could promote the adsorption of metallic ions, while total oxidizable carbon had no effect on adsorption. The adsorption results of the real H<sub>2</sub>O<sub>2</sub> solution showed that ZrO<sub>2</sub>−NH<sub>2</sub> exhibited the best adsorption affinity for metallic ions, as did phosphate and total oxidizable carbon, with a total adsorption capacity of 120.9 mg·g<sup>−1</sup>. Density functional theory calculations revealed that the adsorption process of metallic ions involves electron transfer from N atoms to metals and the formation of N-metal bonds.</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 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140806008","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 effects and kinetics analysis for co-pyrolysis of vacuum residue and plastics 真空残渣和塑料联合热解的协同效应和动力学分析

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-15 DOI: 10.1007/s11705-024-2414-4

Chao Wang, Xiaogang Shi, Aijun Duan, Xingying Lan, Jinsen Gao, Qingang Xiong

{"title":"Synergistic effects and kinetics analysis for co-pyrolysis of vacuum residue and plastics","authors":"Chao Wang, Xiaogang Shi, Aijun Duan, Xingying Lan, Jinsen Gao, Qingang Xiong","doi":"10.1007/s11705-024-2414-4","DOIUrl":"10.1007/s11705-024-2414-4","url":null,"abstract":"<div><p>This study utilized a thermogravimetric analyzer to assess the thermal decomposition behaviors and kinetics properties of vacuum residue (VR) and low-density polyethylene (LDPE) polymers. The kinetic parameters were calculated using the Friedman technique. To demonstrate the interactive effects between LDPE and VR during the co-pyrolysis process, the disparity in mass loss and mass loss rate between the experimental and calculated values was computed. The co-pyrolysis curves obtained through estimation and experimentation exhibited significant deviations, which were influenced by temperature and mixing ratio. A negative synergistic interaction was observed between LDPE and VR, although this inhibitory effect could be mitigated or eliminated by reducing the LDPE ratio in the mixture and increasing the co-pyrolysis temperature. The co-pyrolysis process resulted in a reduction in carbon residue, which could be attributed to the interaction between LDPE and the heavy fractions, particularly resin and asphaltene, present in VR. These findings align with the pyrolysis behaviors exhibited by the four VR fractions. Furthermore, it was observed that the co-pyrolysis process exhibited lower activation energy as the VR ratio increased, indicating a continuous enhancement in the reactivity of the mixed samples during co-pyrolysis.</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 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140702358","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

Single-Ni-atoms on nitrogenated humic acid based porous carbon for CO2 electroreduction 用于二氧化碳电还原的氮化腐植酸基多孔碳上的单核原子

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-10 DOI: 10.1007/s11705-024-2411-7

Delei Yu, Ying Chen, Yao Chen, Xiangchun Liu, Xianwen Wei, Ping Cui

{"title":"Single-Ni-atoms on nitrogenated humic acid based porous carbon for CO2 electroreduction","authors":"Delei Yu, Ying Chen, Yao Chen, Xiangchun Liu, Xianwen Wei, Ping Cui","doi":"10.1007/s11705-024-2411-7","DOIUrl":"10.1007/s11705-024-2411-7","url":null,"abstract":"<div><p>We proposed a facile synthesis of single-Ni-atom catalysts on low-cost porous carbon using a calcination method at the temperatures of 850–1000 °C, which were used for CO<sub>2</sub> electrochemical reduction to CO. The porous carbon was prepared by carbonizing cheap and abundant humic acid. The structural characterizations of the as-synthesized catalysts and their electrocatalytic performances were analyzed. The results showed that the single-Ni-atom catalyst activated at 950 °C showed an optimum catalytic performance, and it reached a CO Faradaic efficiency of 91.9% with a CO partial current density of 6.9 mA·cm<sup>−2</sup> at −0.9 V <i>vs.</i> reversible hydrogen electrode (RHE). Additionally, the CO Faradaic efficiency and current density of the optimum catalyst changed slightly after 8 h of continuous operation, suggesting that it possessed an excellent stability. The structure-activity relations indicate that the variation in the CO<sub>2</sub> electrochemical reduction performance for the as-synthesized catalysts is ascribed to the combined effects of the increase in the content of pyrrolic N, the evaporation of Ni and N, the decrease in pore volume, and the change in graphitization degree.\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 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140593744","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

Crystal facet-dependent CO2 cycloaddition to epoxides over ZnO catalysts 氧化锌催化剂上环氧化物的 CO2 环加成反应与晶面有关

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-10 DOI: 10.1007/s11705-024-2412-6

Yongjian Wei, Ying Li, Yunfei Xu, Yinghui Sun, Tong Xu, Haiou Liang, Jie Bai

{"title":"Crystal facet-dependent CO2 cycloaddition to epoxides over ZnO catalysts","authors":"Yongjian Wei, Ying Li, Yunfei Xu, Yinghui Sun, Tong Xu, Haiou Liang, Jie Bai","doi":"10.1007/s11705-024-2412-6","DOIUrl":"10.1007/s11705-024-2412-6","url":null,"abstract":"<div><p>With regard to green chemistry and sustainable development, the fixation of CO<sub>2</sub> into epoxides to form cyclic carbonates is an attractive and promising pathway for CO<sub>2</sub> utilization. Metal oxides, renowned as promising eco-friendly catalysts for industrial production, are often undervalued in terms of their impact on the CO<sub>2</sub> addition reaction. In this work, we successfully developed ZnO nanoplates with (002) surfaces and ZnO nanorods with (100) surfaces via morphology-oriented regulation to explore the effect of crystal faces on CO<sub>2</sub> cycloaddition. The quantitative data obtained from electron paramagnetic resonance spectroscopy indicated that the concentration of oxygen vacancies on the ZnO nanoplate surfaces was more than twice that on the ZnO nanorod surfaces. Density functional theory calculations suggested that the (002) surfaces have lower adsorption energies for CO<sub>2</sub> and epichlorohydrin than the (100) surfaces. As a result, the yield of cyclochloropropene carbonate on the ZnO nanoplates (64.7%) was much greater than that on the ZnO nanorods (42.3%). Further evaluation of the reused catalysts revealed that the decrease in the oxygen vacancy concentration was the primary factor contributing to the decrease in catalytic performance. Based on these findings, a possible catalytic mechanism for CO<sub>2</sub> cycloaddition with epichlorohydrin was proposed. This work provides a new idea for the controllable preparation of high-performance ZnO catalysts for the synthesis of cyclic carbonates from CO<sub>2</sub> and epoxides.\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 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140593774","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

Improving lipid production by Rhodotorula glutinis for renewable fuel production based on machine learning 基于机器学习提高谷氨酸酵母的脂质产量以生产可再生燃料

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-10 DOI: 10.1007/s11705-024-2410-8

Lihe Zhang, Changwei Zhang, Xi Zhao, Changliu He, Xu Zhang

{"title":"Improving lipid production by Rhodotorula glutinis for renewable fuel production based on machine learning","authors":"Lihe Zhang, Changwei Zhang, Xi Zhao, Changliu He, Xu Zhang","doi":"10.1007/s11705-024-2410-8","DOIUrl":"10.1007/s11705-024-2410-8","url":null,"abstract":"<div><p>Microbial lipid fermentation encompasses intricate complex cell growth processes and heavily relies on expert experience for optimal production. Digital modeling of the fermentation process assists researchers in making intelligent decisions, employing logical reasoning and strategic planning to optimize lipid fermentation. It this study, the effects of medium components and concentrations on lipid fermentation were investigated, first. And then, leveraging the collated data, a variety of machine learning algorithms were used to model and optimize the lipid fermentation process. The models, based on artificial neural networks and support vector machines, achieved <i>R</i><sup>2</sup> values all higher than 0.93, ensuring accurate predictions of the fermentation process. Multiple linear regression was used to evaluate the respective target parameter, which were affected by the medium components of lipid fermentation. Lastly, single and multi-objective optimization were conducted for lipid fermentation using the genetic algorithm. Experimental results demonstrated the maximum biomass of 50.3 g·L<sup>−1</sup> and maximum lipid concentration of 14.1 g·L<sup>−1</sup> with the error between the experimental and predicted values less than 5%. The results of the multi-objective optimization reveal the synergistic and competitive relationship between biomass, lipid concentration, and conversion rate, which lay a basis for in-depth optimization and amplification.\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 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140571069","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

Siliceous mesocellular foam supported Cu catalysts for promoting non-thermal plasma activated CO2 hydrogenation toward methanol synthesis 硅质介孔泡沫支撑铜催化剂促进非热等离子体活化二氧化碳加氢合成甲醇

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2024-04-07 DOI: 10.1007/s11705-024-2419-z

Yi Chen, Shaowei Chen, Yan Shao, Cui Quan, Ningbo Gao, Xiaolei Fan, Huanhao Chen

{"title":"Siliceous mesocellular foam supported Cu catalysts for promoting non-thermal plasma activated CO2 hydrogenation toward methanol synthesis","authors":"Yi Chen, Shaowei Chen, Yan Shao, Cui Quan, Ningbo Gao, Xiaolei Fan, Huanhao Chen","doi":"10.1007/s11705-024-2419-z","DOIUrl":"10.1007/s11705-024-2419-z","url":null,"abstract":"<div><p>Electrified non-thermal plasma (NTP) catalytic hydrogenation is the promising alternative to the thermal counterparts, being able to be operated under mild conditions and compatible with green electricity/hydrogen. Rational design of the catalysts for such NTP-catalytic systems is one of the keys to improve the process efficiency. Here, we present the development of siliceous mesocellular foam (MCF) supported Cu catalysts for NTP-catalytic CO<sub>2</sub> hydrogenation to methanol. The findings show that the pristine MCF support with high specific surface area and large mesopore of 784 m<sup>2</sup>·g<sup>−1</sup> and ∼8.5 nm could promote the plasma discharging and the diffusion of species through its framework, outperforming other control porous materials (viz., silicalite-1, SiO<sub>2</sub>, and SBA-15). Compared to the NTP system employing the bare MCF, the inclusion of Cu and Zn in MCF (i.e., Cu<sub>1</sub>Zn<sub>1</sub>/MCF) promoted the methanol formation of the NTP-catalytic system with a higher space-time yield of methanol at ∼275 µmol·g<sub>cat</sub><sup>−1</sup>·h<sup>−1</sup> and a lower energy consumption of <span>(26.4 text{kJ}cdot text{mmol}_{text{CH}_{3}text{OH}}!^{-1})</span> (conversely, ∼225 µmol·g<sub>cat</sub><sup>−1</sup>·h<sup>−1</sup> and <span>(sim71 text{kJ}cdot text{mmol}_{text{CH}_{3}text{OH}}!^{-1})</span>, respectively, for the bare MCF system at 10.1 kV). The findings suggest that inclusion of active metal sites (especially Zn species) could stabilize the CO<sub>2</sub>/CO-related intermediates to facilitate the surface reaction toward methanol formation.</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 7","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140732723","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