Green Chemical Engineering最新文献_第8页

The effect of the concentration of plastic waste on the formation of reaction products of the Ti–PET system 塑料废弃物的浓度对 Ti-PET 系统反应产物形成的影响

IF 9.1

Green Chemical Engineering Pub Date : 2023-09-09 DOI: 10.1016/j.gce.2023.09.002

{"title":"The effect of the concentration of plastic waste on the formation of reaction products of the Ti–PET system","authors":"","doi":"10.1016/j.gce.2023.09.002","DOIUrl":"10.1016/j.gce.2023.09.002","url":null,"abstract":"<div>The paper presents research results of the synthesis, phase composition, and structure of products obtained by highly exothermic reactions between Ti and C10H8O4 mixture components, depending on the plastic waste concentration and Ti powder dispersiveness, density of initial samples, and synthesis medium. The dependence of the phase composition and structure of the synthesis products on the concentration of the polymer (plastic) component in the initial Ti -PET (C10H8O4) system was found. When the plastic waste content is 20 wt% to 25 wt%, synthesis products contain TiC0.5O0.5–TiC0.6–0.75 particle agglomerates. Further growth in the polyethylene terephthalate content from 30 wt% to 45 wt% leads to the formation of synthesis products consisting of titanium carbide (TiC0.6–1.0). The gaseous byproduct composition of the exothermic reaction is investigated for the Ti–C10H8O4 mixture composition. It is found that the gaseous by-product mostly contains hydrogen and carbon monoxide as well as impurities of different hydrocarbons (methane, acetylene, ethane, ethene) and carbon dioxide. The maximum adiabatic temperature of the gas combustion temperature is 2080 oC, which demonstrates the possibility of using gas as a fuel for energy generation devices. Based on the data obtained, it is possible to create a basis for a new plastic waste technology to fabricate carbide-containing materials.</div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"5 3","pages":"Pages 374-382"},"PeriodicalIF":9.1,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666952823000456/pdfft?md5=758c297778fcd3f6140754b6298e4eaf&pid=1-s2.0-S2666952823000456-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135248192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Furan-derived Schiff base covalent adaptable thermosets with recyclability and anti-flammability 呋喃衍生的希夫碱共价适应性热固性材料，具有可回收性和抗燃性

IF 9.1

Green Chemical Engineering Pub Date : 2023-09-02 DOI: 10.1016/j.gce.2023.08.005

{"title":"Furan-derived Schiff base covalent adaptable thermosets with recyclability and anti-flammability","authors":"","doi":"10.1016/j.gce.2023.08.005","DOIUrl":"10.1016/j.gce.2023.08.005","url":null,"abstract":"<div>Conventional thermosetting polymers, mostly derived from nonrenewable petroleum resources, are not reprocessable and recyclable due to their highly cross-linked three-dimensional networks and face the disadvantage of high flammability. To solve these issues, in this study, we synthesized a novel Schiff base covalent adaptable thermoset from a furan-derived tri-aldehyde monomer (TMFP) and a furan-derived di-amine monomer (DFDA). The as-prepared TMFP-DFDA-Vitrimer exhibited superior anti-flammability with a high limiting oxygen index (LOI) of 35.0% and a UL-94 V-0 rating, which was attributed to the excellent charring ability. Additionally, TMFP-DFDA-Vitrimer could also be conveniently recycled by chemical decomposition under a mixed hydrochloric acid/tetrahydrofuran (HCl/THF) solution. After recycling for 5 times, the thermal, mechanical, and flame retardant properties of the recycled TMFP-DFDA-Vitrimer retained almost unchanged compared to the original one. This work provides a prime instance to develop advanced thermosetting polymers from abundant furan-based compounds.</div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"5 3","pages":"Pages 364-373"},"PeriodicalIF":9.1,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666952823000432/pdfft?md5=ab3c4a3763bbffce1248e8c143770398&pid=1-s2.0-S2666952823000432-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42960927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Progress on gas-solid phase photoreactor and its application in CO2 reduction 气固相光反应器及其在CO2还原中的应用研究进展

IF 9.1

Green Chemical Engineering Pub Date : 2023-09-02 DOI: 10.1016/j.gce.2023.09.001

{"title":"Progress on gas-solid phase photoreactor and its application in CO2 reduction","authors":"","doi":"10.1016/j.gce.2023.09.001","DOIUrl":"10.1016/j.gce.2023.09.001","url":null,"abstract":"<div>The burgeoning field of photocatalytic reduction of CO2 has emerged as a remarkable promising solution to address some of the most pressing global energy and environmental issues which we face today. Researchers around the global have been striving to augment the efficiency of CO2 photocatalytic reduction, employing strategies that range from modifying the fundamental properties of photocatalysts to suppress the electron-hole recombination, optimizing reaction conditions to achieve the highest yield, and conceptualizing and constructing photoreactors to improve the adsorption process. Among these factors, the photoreactor plays a critical role in enhancing the overall photocatalytic efficiency. Understanding the various types of photoreactors and their operational dynamic can significantly influence the experimental design, thus guiding the data collecting and analysis. Compared to the solid-liquid phase, gas-solid phase photocatalytic reduction of CO2 is gaining recognition for its potential advantages, such as rapid molecular diffusion rates, adjustable CO2 concentrations, and uniform and sufficient light exposure. Nonetheless, the currently reported gas-solid phase photoreactors are still in their infancy. In this review, we dissect the underlying mechanism of photocatalytic CO2 reduction and the performance evaluation criteria of photoreactors, and review the development process of gas-solid phase photoreactors. Furthermore, we explore the evolution of gas-solid phase photoreactors, elucidating their growth trajectory and future possibilities. We present a comprehensive classification of gas-solid phase photoreactors, offering a new insight into their design and functionality, summarizing their strengths and inevitable limitations. Finally, we provide a forward-looking perspective on the future developmental prospects of carbon neutrality.</div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"5 3","pages":"Pages 290-306"},"PeriodicalIF":9.1,"publicationDate":"2023-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666952823000444/pdfft?md5=38a19241f7f886795338d565aa3b7d56&pid=1-s2.0-S2666952823000444-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48773086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the interfacial properties of benzene alkylation with 1-dodecene catalyzed by immobilized chloroaluminate ionic liquids using molecular dynamics simulation 分子动力学模拟研究固定化氯铝酸盐离子液体催化苯与1-十二烯烷基化反应的界面性质

Green Chemical Engineering Pub Date : 2023-09-01 DOI: 10.1016/j.gce.2022.07.009

Weizhong Zheng, Jialei Sha, Weizhen Sun, Ling Zhao

引用次数: 0

OFC: Outside Front Cover OFC：外封面

Green Chemical Engineering Pub Date : 2023-09-01 DOI: 10.1016/S2666-9528(23)00026-2

引用次数: 0

Regulating electronic environment on alkali metal-doped Cu@NS-SiO2 for selective anisole hydrodeoxygenation 碱金属掺杂对电子环境的调控Cu@NS-SiO2用于选择性苯甲醚加氢脱氧

Green Chemical Engineering Pub Date : 2023-09-01 DOI: 10.1016/j.gce.2022.06.003

Xiaofei Wang , Xiaoxue Han , Li Kang , Shixiang Feng , Meiyan Wang , Yue Wang , Shouying Huang , Yujun Zhao , Shengping Wang , Xinbin Ma

{"title":"Regulating electronic environment on alkali metal-doped Cu@NS-SiO2 for selective anisole hydrodeoxygenation","authors":"Xiaofei Wang , Xiaoxue Han , Li Kang , Shixiang Feng , Meiyan Wang , Yue Wang , Shouying Huang , Yujun Zhao , Shengping Wang , Xinbin Ma","doi":"10.1016/j.gce.2022.06.003","DOIUrl":"10.1016/j.gce.2022.06.003","url":null,"abstract":"<div>Lignin utilization is a potential approach for replacing fossil energy and releasing the environment pressure. Herein, we synthesized a series of novel Cu-based catalysts, Cu@NS-SiO2 (NS = nano sphere) and alkali metals (Na, K, Rb, and Cs) doped Cu@NS-SiO2, and applied them in hydrodeoxygenation reaction of anisole. High Cu dispersion was presented on all catalysts. The modification of alkali metals on Cu@NS-SiO2 significantly enhanced the electron density of Cu sites in the following order: Cs > Rb > K > Na, among which Cs decreased the Cu 2p3/2 binding energy most (by 0.7 eV). Moreover, the modification did not substantially affect the geometric structure of Cu species. This regulable electronic environment of Cu sites was crucial for selective deoxygenation and inhibiting the hydrogenation of aromatic rings in anisole, and thus promoted the selectivity of benzene. Compared with Cu@NS-SiO2 (∼59%), the highest benzene selectivity was obtained on Cs/10Cu@NS-SiO2 at ∼83%.</div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"4 3","pages":"Pages 294-302"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47920677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Regulated CO adsorption by the electrode with OH− repulsive property for enhancing C–C coupling 具有OH -斥力的电极调节CO吸附，增强C-C耦合

Green Chemical Engineering Pub Date : 2023-09-01 DOI: 10.1016/j.gce.2022.07.007

Qixing Zhang , Dan Ren , Jing Gao , Zhongke Wang , Juan Wang , Sanjiang Pan , Manjing Wang , Jingshan Luo , Ying Zhao , Michael Grätzel , Xiaodan Zhang

{"title":"Regulated CO adsorption by the electrode with OH− repulsive property for enhancing C–C coupling","authors":"Qixing Zhang , Dan Ren , Jing Gao , Zhongke Wang , Juan Wang , Sanjiang Pan , Manjing Wang , Jingshan Luo , Ying Zhao , Michael Grätzel , Xiaodan Zhang","doi":"10.1016/j.gce.2022.07.007","DOIUrl":"10.1016/j.gce.2022.07.007","url":null,"abstract":"<div>Electrochemical CO2 reduction driven by renewable electricity is one of the promising strategies to store sustainable energy as fuels. However, the selectivity of value-added multi-carbon products remains poor for further application of this process. Here, we regulate CO adsorption by forming a Nafion layer on the copper (Cu) electrode that is repulsive to OH−, contributing to enhanced selectivity of CO2 reduction to C2+ products with the suppression of C1 products. The operando Raman spectroscopy indicates that the local OH− would adsorb on part of active sites and decrease the adsorption of CO. Therefore, the electrode with repulsive to OH− can adjust the concentration of OH−, leading to the increased adsorption of CO and enhanced C–C coupling. This work shows that electrode design could be an effective strategy for improving the selectivity of CO2 reduction to multi-carbon products.</div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"4 3","pages":"Pages 331-337"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42216680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient synthesis of cyclic carbonates under atmospheric CO2 by DMAP-based ionic liquids: the difference of inert hydrogen atom and active hydrogen atom in cation dmap基离子液体在大气CO2下高效合成环状碳酸盐:阳离子中惰性氢原子与活性氢原子的差异

Green Chemical Engineering Pub Date : 2023-09-01 DOI: 10.1016/j.gce.2022.06.001

Zhengkun Zhang , Jinya Li , Guanyao Yu , Chao Zeng , Menglong Wang , Susu Huang , Li Wang , Jinglai Zhang

{"title":"Efficient synthesis of cyclic carbonates under atmospheric CO2 by DMAP-based ionic liquids: the difference of inert hydrogen atom and active hydrogen atom in cation","authors":"Zhengkun Zhang , Jinya Li , Guanyao Yu , Chao Zeng , Menglong Wang , Susu Huang , Li Wang , Jinglai Zhang","doi":"10.1016/j.gce.2022.06.001","DOIUrl":"10.1016/j.gce.2022.06.001","url":null,"abstract":"<div>The coupling reaction of carbon dioxide (CO2) and epoxides is one of the most efficient pathways to achieve the carbon balance. However, to accomplish it under the mild conditions, especially under the atmospheric pressure, is still a perplexing problem. Three novel ionic liquids (ILs), [DMAPBrPC][TMGH], [DMAPBrPC][DBUH], and [DMAPBrPC][BTMA], are designed and synthesized. All of them display the excellent catalytic activity for the title reaction achieving the yield over 96.6% under the atmospheric CO2 pressure at 60 °C. Interestingly, [DMAPBrPC][BTMA] with the inert hydrogen atom in cation exhibits the superior catalytic activity as compared to other two ILs with the protic hydrogen atom in cation along with the same anion. The active hydrogen atom in [DMAPBrPC][TMGH] and [DMAPBrPC][DBUH] would impede the –COO− group to absorb CO2, which is an unfavorable item for the reaction. Moreover, the strong hydrogen bond in [DMAPBrPC][TMGH] and [DMAPBrPC][DBUH] would lessen the nucleophilic ability of Br− anion resulting in the inferior catalytic performance, which is further confirmed by the density functional theory (DFT) calculations. The cation without the active hydrogen atom could also be employed to design the ILs with the excellent catalytic feature when it is combined with the suitable anion.</div>","PeriodicalId":66474,"journal":{"name":"Green Chemical Engineering","volume":"4 3","pages":"Pages 285-293"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47059352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Outside Back Cover 封底

Green Chemical Engineering Pub Date : 2023-09-01 DOI: 10.1016/S2666-9528(23)00033-X

引用次数: 0

Mild and efficient recovery of lithium-ion battery cathode material by deep eutectic solvents with natural and cheap components 采用天然廉价成分的深共晶溶剂温和高效地回收锂离子电池正极材料

Green Chemical Engineering Pub Date : 2023-09-01 DOI: 10.1016/j.gce.2022.06.005

Yu Chen , Yanlong Wang , Yue Bai , Minghui Feng , Fengyi Zhou , Yanhong Lu , Yuting Guo , Yixuan Zhang , Tiancheng Mu

引用次数: 19