Industrial & Engineering Chemistry Research最新文献

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Lightweight, Robust, and Multifunctional Polyimide-Based Carbon Foams for Electromagnetic Interference Shielding and Thermal Insulation 用于电磁干扰屏蔽和隔热的轻质、坚固和多功能聚酰亚胺基碳泡沫
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-13 DOI: 10.1021/acs.iecr.4c01568
Fenglin Wang, Cuiqing Zhou, Long Ni, Haichao Meng, Huawei Zou, Mei Liang, Yinfu Luo, Shengtai Zhou
{"title":"Lightweight, Robust, and Multifunctional Polyimide-Based Carbon Foams for Electromagnetic Interference Shielding and Thermal Insulation","authors":"Fenglin Wang, Cuiqing Zhou, Long Ni, Haichao Meng, Huawei Zou, Mei Liang, Yinfu Luo, Shengtai Zhou","doi":"10.1021/acs.iecr.4c01568","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c01568","url":null,"abstract":"Polyimide (PI)-based carbon foams (CFs) with excellent compressive strength, thermal insulation, and electromagnetic interference (EMI) shielding properties were fabricated through microsphere foaming and carbonization processes. The cell size of CFs ranged from 207.8 to 563.9 μm and could be regulated by adjusting the size of polyester ammonium salts (PEASs), and the chemical structure depended on the carbonization temperature. The compressive strength of C<sub>1100</sub>-PIF-1 was 0.74 MPa with a density of 119.9 kg·m<sup>–3</sup>. The thermal conductivities of C<sub>800</sub>-PIF-1 at room temperature, 500, and 1000 °C were 0.126, 0.202, and 0.252 W·m<sup>–1</sup>K<sup>–1</sup>, respectively. Furthermore, CFs exhibited excellent EMI shielding properties, with C<sub>1100</sub>-PIF-2 and C<sub>1100</sub>-PIF-3 reaching 56.4 and 42.1 dB at 8.2–12.4 GHz. The electrical conductivity fell in the range of 5.5–38.5 S·m<sup>–1</sup>. The CFs fabricated in this work, which combined exceptional mechanical strength, thermal insulation, and EMI shielding properties, had potential applications in aerospace, high-temperature insulation, and chemical catalysis.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141602840","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
Recovery of Uranium in a Carbonate Solution Using Methyltrioctylammonium Carbonate as the Extractant 使用甲基三辛基碳酸铵作为萃取剂回收碳酸盐溶液中的铀
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-12 DOI: 10.1021/acs.iecr.4c00983
Haofan Fang, Mingjian He, Caishan Jiao, Chenxi Hou, Meng Zhang, Jingyang Wang
{"title":"Recovery of Uranium in a Carbonate Solution Using Methyltrioctylammonium Carbonate as the Extractant","authors":"Haofan Fang, Mingjian He, Caishan Jiao, Chenxi Hou, Meng Zhang, Jingyang Wang","doi":"10.1021/acs.iecr.4c00983","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c00983","url":null,"abstract":"The CARBEX process, proposed in 2008, is a spent nuclear fuel reprocessing method that relies on the alkaline environment of a carbonate-hydrogen peroxide system. The extraction stage is the most important step and is mainly used for the separation of nuclides. In this work, we focused on the extraction stage of the CARBEX process, using methyltrioctylammonium carbonate as an extractant to extract uranium from the carbonate solution. The effects of the concentration of uranium (0.02–0.17 mol/L) and carbonate (0.5–1.2 mol/L) in an aqueous solution, extractant concentration (0.1–0.6 mol/L), phase volume ratio (3:1–1:3), and temperature (25–60 °C) on the extraction distribution ratio were studied. The results show that the concentration of carbonate has a great influence on extraction, and the distribution ratio increases rapidly with the decrease of the concentration of carbonate in the aqueous phase. In addition, we investigated the potential of the extractant. The extractant can reach a distribution ratio of 0.78 in the presence of a high concentration (292.9 gU/L) of uranium in the aqueous solution. In the end, we deduced the extraction mechanism, and the extraction reaction equation was given.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597383","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
Regulating the Porous Structure of Lignin-Derived Carbon Materials for High Adsorption Performance via Dual Nitrogen Source-Assisted Activation 通过双氮源辅助活化调节木质素衍生碳材料的多孔结构以实现高吸附性能
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-12 DOI: 10.1021/acs.iecr.4c01835
Fangbao Fu, Dongcheng Bai, Zhihong Cai, Xuliang Lin, Xueqing Qiu
{"title":"Regulating the Porous Structure of Lignin-Derived Carbon Materials for High Adsorption Performance via Dual Nitrogen Source-Assisted Activation","authors":"Fangbao Fu, Dongcheng Bai, Zhihong Cai, Xuliang Lin, Xueqing Qiu","doi":"10.1021/acs.iecr.4c01835","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c01835","url":null,"abstract":"Carbon adsorbents are ideal materials for the treatment of organic pollutants in water, but there still exist challenges in regulating the pore structure and optimizing the adsorption properties. This work presents the preparation and application of lignin-derived carbon materials (ALUNC-0.5) with high specific surface area, multiscale pores, and abundant nitrogen doping sites achieved through coactivation using melamine, urea, and potassium carbonate. And the carbon source used is the biorefinery residue lignin. The incorporation of urea facilitated the uniform mixing of raw materials and enhanced the microporosity of the resulting carbon materials. In simulated wastewater treatment scenarios, ALUNC-0.5 demonstrated impressive actual adsorption capacities of up to 1276 and 1414 mg g<sup>–1</sup> for methylene blue (MB) and tetracycline hydrochloride (TCH), respectively, while maintaining excellent reproducibility. This exceptional efficacy in pollutant removal can be attributed to the presence of multiscale pores and nitrogen doping sites, which effectively facilitate mass transfer and enhance pollutant adsorption through multiple mechanisms. The study presents a green and efficient activation method for the preparation of lignin carbon materials with outstanding adsorption performance, offering valuable insights into sustainable approaches for mitigating water pollution.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597385","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
Integrated Taylor–Couette Reactor Model for Heterogeneous Photocatalytic Degradation of AO7 异相光催化降解 AO7 的泰勒-库埃特反应器集成模型
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-12 DOI: 10.1021/acs.iecr.4c01479
Chang Wang, Wen Chen, Jun Wei, Wei-Dong Shi, Wei-Cheng Yan
{"title":"Integrated Taylor–Couette Reactor Model for Heterogeneous Photocatalytic Degradation of AO7","authors":"Chang Wang, Wen Chen, Jun Wei, Wei-Dong Shi, Wei-Cheng Yan","doi":"10.1021/acs.iecr.4c01479","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c01479","url":null,"abstract":"Taylor–Couette reactors have exhibited great potential for applications in heterogeneous photocatalysis. In this study, an integrated computational fluid dynamic model combining the Euler–Lagrange approach, the discrete ordinate model, the discrete phase model, and the user-defined functions was established to simulate the process of the photocatalytic degradation of acid orange 7 with titanium dioxide and to reveal the interaction among the flow field, radiation field, particle distributions, and reaction kinetics. The results show that an inner cylinder rotation speed of 11.96 rad/s and a light source intensity of over 23 W/m<sup>2</sup> help photocatalysts absorb more photons. The catalysts with a particle size over 300 nm and a mass concentration of 1 g/L give a higher photodegradation efficiency. With the help of this model, heterogeneous photocatalysis technology with Taylor–Couette reactors as the key component can be scaled up for industrial applications in organic pollutant removal.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597384","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
Improved Transalkylation of C10 Aromatics with 2-Methylnaphthalene for 2,6-Dimethylnaphthalene Synthesis over Pd-Modified Zeolites with Different Framework Structures 在具有不同框架结构的钯改性沸石上改进 C10 芳烃与 2-甲基萘的反烷基化,以合成 2,6-二甲基萘
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-12 DOI: 10.1021/acs.iecr.4c01976
Junhui Li, Ziliang Liao, Wenzhi Jia, Zhirong Zhu
{"title":"Improved Transalkylation of C10 Aromatics with 2-Methylnaphthalene for 2,6-Dimethylnaphthalene Synthesis over Pd-Modified Zeolites with Different Framework Structures","authors":"Junhui Li, Ziliang Liao, Wenzhi Jia, Zhirong Zhu","doi":"10.1021/acs.iecr.4c01976","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c01976","url":null,"abstract":"Here, Pd-HMCM-22, Pd-HBeta, Pd-HMOR, and Pd-HZSM-5 zeolites were prepared and, respectively, tested as catalysts in the transalkylation of C<sub>10</sub> aromatics (C<sub>10</sub>A) with 2-methylnaphthalene (2-MN) for synthesizing 2,6-dimethylnaphthalene (2,6-DMN). Each one of these Pd-zeolites exhibited a significantly improved transalkylation reactivity (compared with its parent precursor) in H<sub>2</sub> reaction atmosphere, likely attributed to a hydrogen spillover from metal Pd to zeolite and the subsequent generation of surface-active hydrogen species, which greatly enhanced the proton-transfer efficiency in the surface transalkylation catalyzed by strong protonic acid sites. Meanwhile, it is speculated that the surface-active hydrogen species also accelerated the secondary DMNs’ isomerization and simultaneously caused a coincident increase in the selectivities (in DMNs) of 2,6-DMN and β,β-DMNs with a higher diffusion rate in pores or pockets. The 0.1 wt % Pd-HBeta with 12-ring large pores, more strong Brönsted acid sites, a high Lewis acid density, and a higher palladium dispersion showed a higher 2-MN conversion, DMN selectivity, and 2,6-DMN yield than those of the other three 0.1 wt % Pd-modified zeolites. Because of the strong protonic acid density, the Pd dispersion of 0.1 wt % Pd-HMCM-22 or 0.1 wt % Pd-HMOR was lower, and 0.1 wt % Pd-HZSM-5 had a lower palladium dispersion and a repulsion of its smaller pores to C<sub>10</sub>A reactants. Moreover, the reasonable distributions of metal-Pd sites and acidity on the 0.1 wt % Pd-HBeta catalyst not only prevented the severe naphthalene ring loss resulting from the side reactions of hydrogenation and subsequent ring opening and cracking, but also endowed it with a remarkably improved catalytic stability due to the fact that a reasonable catalytic hydrogenation effectively suppressed the formation of large coke molecules and restrained a fast coke deposition. Finally, the 2-MN conversion of &gt;81% and the 2,6-DMN yield of &gt;9.8% were obtained over 0.1 wt % Pd-HBeta during a 25 h on-stream reaction, depending on both an efficient internal diffusion of reactants/products in its three-dimensional 12-ring pores, where enough active sites were accessible, and a high-efficiency surface-concerted catalysis of metal-Pd sites and acid sites.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597411","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
Construction of Microreactor-like Square-Hole Carbon Nitride Boosting Photocatalytic Nitrogen Fixation Activity 构建微反应器状方孔氮化碳,提高光催化固氮活性
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-11 DOI: 10.1021/acs.iecr.4c01915
Wei Cai, Kang Li, Ziqi Zhu, Jianuan Wen, Qin Zhong, Hongxia Qu
{"title":"Construction of Microreactor-like Square-Hole Carbon Nitride Boosting Photocatalytic Nitrogen Fixation Activity","authors":"Wei Cai, Kang Li, Ziqi Zhu, Jianuan Wen, Qin Zhong, Hongxia Qu","doi":"10.1021/acs.iecr.4c01915","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c01915","url":null,"abstract":"Enhancing mass transfer is a crucial approach to improve the performance for photocatalytic nitrogen fixation, a classical multiphase catalytic reaction. In this work, the square-hole carbon nitride (SH-C<sub>3</sub>N<sub>5</sub>) was constructed inspired by microreactors. By observing the adsorption of bubbles on the catalyst, it can be confirmed that the square holes help to stabilize the bubbles and prolong the residence time. Mass transfer could be efficiently increased, and the gas–solid contact response time was extended. SH-C<sub>3</sub>N<sub>5</sub> exhibited higher photocatalytic nitrogen fixation performance compared to the planar 2D carbon nitride (g-C<sub>3</sub>N<sub>5</sub>). While anchored with vanadium carbon dots (V-CDs) on it, SH-C<sub>3</sub>N<sub>5</sub> outperformed g-C<sub>3</sub>N<sub>5</sub> by 1.04 times, reaching a high performance of 1157.6 μmol·g<sup>–1</sup>·h<sup>–1</sup>. The V-CDs serve as the active center of the catalyst for activation of nitrogen and water. The design of microreactor-like square-hole carbon nitride in this study is meaningful and provides new insights and ideas for the development of catalysts for multiphase catalytic reactions.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588812","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
Mixed Matrix Membranes Based on MFI Zeolite Nanosheets with Tunable Thickness for CO2/CH4 and H2/CH4 Separation 基于厚度可调的 MFI 纳米沸石的混合基质膜,用于分离 CO2/CH4 和 H2/CH4
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-11 DOI: 10.1021/acs.iecr.4c00923
Chao Feng, Yulei Ma, Jinyu Liu, Bo Tang, Xiaohua Ma, Jie Liu, Wenju Jiang, Lin Yang, Lu Yao, Zhongde Dai, Changwu Zou
{"title":"Mixed Matrix Membranes Based on MFI Zeolite Nanosheets with Tunable Thickness for CO2/CH4 and H2/CH4 Separation","authors":"Chao Feng, Yulei Ma, Jinyu Liu, Bo Tang, Xiaohua Ma, Jie Liu, Wenju Jiang, Lin Yang, Lu Yao, Zhongde Dai, Changwu Zou","doi":"10.1021/acs.iecr.4c00923","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c00923","url":null,"abstract":"Mixed matrix membranes (MMMs) combine the advantages of polymers and nanofillers. In this work, MFI zeolite nanosheets with different thicknesses (i.e., 40, 80, and 200 nm) were synthesized hydrothermally. MMMs were fabricated by incorporating MFI zeolite nanosheets into Tröger’s base polymer (TB). Gas separation performance of the obtained MMMs was systematically investigated under different operation conditions (e.g., feed pressure and test temperature). Meanwhile, MMMs were also characterized using various techniques including SEM, FTIR, TGA, and XRD. Even though the presence of all three different MFI zeolite nanosheets significantly improved the gas permeability. It was found out the MMMs with MFI nanosheets in the lowest thickness (i.e., 40 nm) showed the highest improvement in both CO<sub>2</sub> and H<sub>2</sub> permeability (7.2 and 4.9 times, respectively), denoting developing zeolite nanosheet materials with small thickness could be a promising strategy to promote gas separation performances of MMMs.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588813","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
Nb-Modified Mn–Fe–PILC Catalyst with Improved Resistance to Alkali Metals for the NH3–Selective Catalytic Reduction Reaction 用于 NH3 选择性催化还原反应的 Nb 改性 Mn-Fe-PILC 催化剂具有更强的抗碱金属能力
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-11 DOI: 10.1021/acs.iecr.4c01474
Xinpeng Wang, Chao Qu, Wenyi Liu, Fanwei Meng, Fan Yang, Xin Zhang, Qing Ye
{"title":"Nb-Modified Mn–Fe–PILC Catalyst with Improved Resistance to Alkali Metals for the NH3–Selective Catalytic Reduction Reaction","authors":"Xinpeng Wang, Chao Qu, Wenyi Liu, Fanwei Meng, Fan Yang, Xin Zhang, Qing Ye","doi":"10.1021/acs.iecr.4c01474","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c01474","url":null,"abstract":"Sodium (Na) and potassium (K) are frequently encountered alkali metals in industrial exhaust gases, and their presence can significantly diminish the catalytic performance of the catalyst during the NH<sub>3</sub>–SCR reaction. Here, we prepared a catalyst using layered montmorillonite clay pillared with manganese and iron (termed Mn–Fe–PILC) as well as its niobium-modified counterpart (referred to as Nb/Mn–Fe–PILC). Furthermore, additional samples denoted as Mn–Fe–PILC-M and Nb/Mn–Fe–PILC-M (where M = Na or K) were synthesized using the impregnation method with a nitrate aqueous solution of Na or K. The results revealed an obvious enhancement in the catalytic activity of NH<sub>3</sub>–SCR upon the inclusion of Nb, with the best catalyst achieving a NO<sub><i>x</i></sub> conversion rate of 95% at 300 °C. Moreover, the resistance of the Mn–Fe–PILC catalyst to alkali metals was notably increased. Subsequent characterization demonstrated that the introduction of Nb to Mn–Fe–PILC led to an increase in the quantity of tetravalent manganese species present on the catalyst, alteration in reducibility, and augmentation in the number of acid sites, thereby enhancing the catalyst’s resistance to alkali metals. Furthermore, in situ DRIFTS experiments revealed that the modification with Nb resulted in an amplified adsorption capacity for ammonia or nitric oxide, particularly influencing the formation of ammonia intermediates and nitrate species. These alterations proved beneficial in bolstering the alkali metal resistance of the catalyst.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597407","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
Production Phases of Methane and Carbon Dioxide Hydrates Intended for Energy Conversion 用于能源转换的甲烷和二氧化碳水合物的生产阶段
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-11 DOI: 10.1021/acs.iecr.4c00790
K. Vinogrodskiy, N. Shlegel, P. Strizhak
{"title":"Production Phases of Methane and Carbon Dioxide Hydrates Intended for Energy Conversion","authors":"K. Vinogrodskiy, N. Shlegel, P. Strizhak","doi":"10.1021/acs.iecr.4c00790","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c00790","url":null,"abstract":"Today, natural gas is transported by pipelines or in a liquefied state, which is extremely cost-intensive. Using gas hydrates for gas transportation can substantially reduce these costs. However, far too little attention has been paid to developing fast and economical ways to synthesize gas hydrates. To address this research gap, we conducted several series of experiments on the synthesis of methane and carbon dioxide hydrates in a reactor with a magnetic stirrer and a working volume of 500 mL. The thermobaric conditions, stirring speed, and initial volume of water were varied to determine the optimal parameters for hydrate production. The experiments have shown that the effective hydrate production requires nonmonotonic mechanical agitation of liquid and crystals in the reactor. The stirring speed should be varied during the transitions between hydrate formation phases. As a result, the reactor input power can be reduced by 10–15%, while maintaining high production efficiency. The research findings served as a basis for a newly developed conceptual framework for the use of gas hydrates in the power industry.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588809","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
Facile Fabrication of Magnetic FeCo@N-Doped Carbon Boosting CO2 Electroreduction to C1+2 United with CH3OH Anodic Oxidation to Methylal in an Ionic Liquid 轻松制备掺杂磁性 FeCo@N 的碳,促进 CO2 电还原为 C1+2 与 CH3OH 在离子液体中阳极氧化为甲缩醛的联合反应
IF 4.2 3区 工程技术
Industrial & Engineering Chemistry Research Pub Date : 2024-07-11 DOI: 10.1021/acs.iecr.4c01334
Bairui Yang, Hongyan Li, Shuang Liu, Jiawei Zhang, Jingxiang Zhao, Qinghai Cai
{"title":"Facile Fabrication of Magnetic FeCo@N-Doped Carbon Boosting CO2 Electroreduction to C1+2 United with CH3OH Anodic Oxidation to Methylal in an Ionic Liquid","authors":"Bairui Yang, Hongyan Li, Shuang Liu, Jiawei Zhang, Jingxiang Zhao, Qinghai Cai","doi":"10.1021/acs.iecr.4c01334","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c01334","url":null,"abstract":"The torpid oxygen evolution reaction (OER) at the counter electrode and HER as a competing reaction currently are the main problems besetting CO<sub>2</sub> electroreduction in an aqueous electrolyte. Fe–Co encapsulated in N-doped carbon (FeCo@NC) was fabricated by the facile hydrothermal-pyrolytic approach and characterized by X-ray diffraction, TEM, FT-IR, Raman, and XPS to determine its composition and structure. The VSM measurement shows that prepared FeCo@NC possesses stronger magnetic property, and the CO<sub>2</sub> electroreduction test at the FeCo@NC cathode indicates that FeCo@NC can boost the reduction of CO<sub>2</sub> to C<sub>1</sub> (CO + CH<sub>4</sub>) and C<sub>2</sub> (dimethyl ether) compounds, associated with the Pt anode to conduct methanol electrooxidation to methylal (dimethoxymethane) in an ionic liquid–methanol medium, actualizing two half-reactions for coproducing energy chemicals. Higher average FE<sub>DMM</sub> (56.1%) within 24 h and high momentary FE<sub>C1+C2</sub> (80.0%) at 24 h were obtained. The role that the Co, Fe–Co alloy, and Fe<sub>3</sub>O<sub>4</sub> constituents play in the electrochemical reduction reaction of CO<sub>2</sub> (CO<sub>2</sub>eRR) was explored. The catalyst exhibits higher stability for the CO<sub>2</sub>eRR within 72 h.","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":null,"pages":null},"PeriodicalIF":4.2,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141597412","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
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