燃料化学学报 Pub Date : 2024-09-01 DOI: 10.1016/S1872-5813(24)60457-3

LIU Ruilin , WANG Sen , MENG Fanchun , LI Zhuo , YANG Huimin , ZHAO Shichao , QIN Yong , ZHANG Bin

{"title":"The study of design and performance improvement of catalysts for the stepwise production of bicyclohexane from benzene and cyclohexene","authors":"LIU Ruilin , WANG Sen , MENG Fanchun , LI Zhuo , YANG Huimin , ZHAO Shichao , QIN Yong , ZHANG Bin","doi":"10.1016/S1872-5813(24)60457-3","DOIUrl":"10.1016/S1872-5813(24)60457-3","url":null,"abstract":"<div>Bicyclohexane is a hydrogen storage reagent with high hydrogen density and low boiling point. Compared with the hydrogenation of biphenyl, the alkylation of benzene and cyclohexene to cyclohexylbenzene and hydrogenation is a promising way to prepare cyclohexane on a large scale. The research and development of high-efficiency cyclohexyl benzene hydrogenation catalyst should be further developed based on mature alkylation technology. This paper used an acidified USY molecular sieve to catalyze the alkylation of benzene and cyclohexene to cyclohexylbenzene, which achieved 100% conversion and selectivity. Furthermore, Pt/TiO2/γ-Al2O3 catalyst is prepared by pre-deposition TiO2 film of different thicknesses on γ-Al2O3 surface and then supported with platinum particles by Atomic layer deposition (ALD). The role of TiO2 film in improving the cyclohexylbenzene hydrogenation performance of the catalyst is studied. TEM, CO pulse chemisorption, CO-DRIFTs, quasi-in situ XPS, H-D exchange, and H2-TPR characterization show that compared with Pt/γ-Al2O3, TiO2 thin films on Pt/TiO2/γ-Al2O3 do not change the dispersion of Pt particles, but can form new Pt-TiO2 interactions. The hydrogenation performance of cyclohexylbenzene was improved by increasing the electron density and the proportion of planar active sites on the surface of platinum and reducing the energy barrier of hydrogen spillover. The research provides theoretical support for further bicyclohexane organic liquid hydrogen storage reagent development. The relevant metal-support interaction regulation strategy can be applied to the development of efficient catalysts for other aromatic molecules hydrogenation.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 9","pages":"Pages 1290-1298"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164367","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

Effect of Rh loading on the selectivity to methanol and ethanol in the hydrogenation of CO2 over the Rh/CeO2 catalyst Rh 负荷对 Rh/CeO2 催化剂在 CO2 加氢过程中甲醇和乙醇选择性的影响

燃料化学学报 Pub Date : 2024-09-01 DOI: 10.1016/S1872-5813(24)60450-0

ZHENG Ke, LIU Bing, XU Yuebing, LIU Xiaohao

{"title":"Effect of Rh loading on the selectivity to methanol and ethanol in the hydrogenation of CO2 over the Rh/CeO2 catalyst","authors":"ZHENG Ke, LIU Bing, XU Yuebing, LIU Xiaohao","doi":"10.1016/S1872-5813(24)60450-0","DOIUrl":"10.1016/S1872-5813(24)60450-0","url":null,"abstract":"<div>The capture and hydrogenation of CO2 into high-value chemicals such as alcohols is one of the important ways to reduce CO2 emission and achieve carbon resource recycling. In this work, the catalytic performance of Rh/CeO2 catalyst in the CO2 hydrogenation was investigated; with the help of various characterization methods including XRD, Raman, H2-TPR, CO2-TPD, CO-DRIFTS and XPS, the influence of Rh loading (0.1%–2.0%) on the catalytic activity of Rh/CeO2 and product selectivity in the CO2 hydrogenation was revealed. The results indicate that for the hydrogenation of CO2 at 250 °C and 3.0 MPa over the Rh/CeO2 catalysts, ethanol is the major product at a low Rh loading of 0.1%. With the increase of Rh loading, the conversion of CO2 increases, but accompanied by a decrease in the selectivity to ethanol; when the Rh loading reaches 2.0%, the main product turns to be methanol. It seems that the difference of various Rh/CeO2 catalysts with different Rh loadings in the product selectivity for the CO2 hydrogenation is ascribed to their difference in the structural and electronic properties of Rh; atomically dispersed Rh+ species favor the stabilization of CO* and its subsequent C–C coupling with CH3* to form ethanol, whereas metallic Rh clusters facilitate the hydrogenation of CO* to produce methanol.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 9","pages":"Pages 1214-1223"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142163667","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

Preparation of silicon foam supported CoMn catalysts and their catalytic performances in higher alcohol synthesis via syngas 泡沫硅支撑 CoMn 催化剂的制备及其在利用合成气合成高级醇中的催化性能

燃料化学学报 Pub Date : 2024-09-01 DOI: 10.1016/S1872-5813(24)60444-5

DU Xin , ZHANG Mingwei , FANG Kegong

{"title":"Preparation of silicon foam supported CoMn catalysts and their catalytic performances in higher alcohol synthesis via syngas","authors":"DU Xin , ZHANG Mingwei , FANG Kegong","doi":"10.1016/S1872-5813(24)60444-5","DOIUrl":"10.1016/S1872-5813(24)60444-5","url":null,"abstract":"<div>A series of silicon foam supported CoMn catalysts were prepared using impregnation, precipitation, and hydrothermal methods. Combining the characterization techniques such as XRD, H2-TPR, N2 physical adsorption, TEM, and XPS, the effect of different catalyst preparation methods on the catalytic performance in the synthesis of higher alcohols from syngas was investigated. It is shown that there are Co2+(Co2C) and Co0 species on the surface of the catalyst. The active sites of Co2C-Co0 on the surface of the catalyst prepared by hydrothermal method have a good synergistic effect, which is conducive to the generation of alcohols. A higher proportion of Co2C also promotes the associative adsorption and insertion of CO, resulting in the highest alcohol selectivity. Under the reaction conditions of t=260 °C, p=5.0 MPa, GHSV=4500 h–1 and H2/CO(volume ratio)=2:1, the catalyst exhibited the best reaction performances with CO conversion of 11.1%, total alcohol selectivity of 34.7%, and C2+OH selectivity of 34.5%.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 9","pages":"Pages 1224-1234"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142163668","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

Synthesis of γ-Valerolactone through coupling of methyl levulinate hydrogenation with aqueous phase reforming of methanol over Pt/CoxAl catalyst 在 Pt/CoxAl 催化剂上通过乙酰丙酸甲酯加氢与甲醇水相重整耦合合成 γ-戊内酯

燃料化学学报 Pub Date : 2024-09-01 DOI: 10.1016/S1872-5813(24)60453-6

LÜ Zexiang , ZHU Shanhui , DONG Mei , QIN Zhangfeng , FAN Weibin , WANG Jianguo

{"title":"Synthesis of γ-Valerolactone through coupling of methyl levulinate hydrogenation with aqueous phase reforming of methanol over Pt/CoxAl catalyst","authors":"LÜ Zexiang , ZHU Shanhui , DONG Mei , QIN Zhangfeng , FAN Weibin , WANG Jianguo","doi":"10.1016/S1872-5813(24)60453-6","DOIUrl":"10.1016/S1872-5813(24)60453-6","url":null,"abstract":"<div>The synthesis of high-value γ-valerolactone (GVL) from biomass-derived methyl levulinate (ML) conventionally requires a high-pressure hydrogen, which incurs significant costs and safety concerns. This study proposes an innovative approach to produce GVL by integrating ML hydrogenation with aqueous phase reforming of methanol (APRM) using Pt/CoxAl catalysts, thereby eliminating the need for an external hydrogen source. The influence of catalyst composition, methanol concentration, and reaction temperature on catalytic performance has been carefully examined. The results suggest that Pt/Co1Al demonstrated exceptional activity, yielding up to 98.2% GVL, and maintaining stable performance over multiple cycles. Characterization results revealed that Pt0 facilitates both APRM and ML hydrogenation, while Brønsted acid sites catalyze the hydrolysis of ML and lactonization of intermediates. The synergy between Pt0 and Brønsted acid sites is essential for GVL formation. The appropriate amount of Co not only enhances Pt dispersion but also increases Brønsted acid sites, thereby boosting catalytic efficiency. This work offers a sustainable and economically feasible strategy for transforming biomass derivatives into valuable fuels and chemicals.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 9","pages":"Pages 1266-1279"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164363","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

Preparation of Co0.5Cu0.5/CNR catalyst and its performance in hydrogen production by hydrolysis of ammonia borane Co0.5Cu0.5/CNR 催化剂的制备及其在硼烷氨水解制氢中的性能

燃料化学学报 Pub Date : 2024-09-01 DOI: 10.1016/S1872-5813(24)60442-1

ZUO Youhua , LI Rong , HUA Junfeng , HAO Siyu , XIE Jing , XU Lixin , YE Mingfu , WAN Chao

{"title":"Preparation of Co0.5Cu0.5/CNR catalyst and its performance in hydrogen production by hydrolysis of ammonia borane","authors":"ZUO Youhua , LI Rong , HUA Junfeng , HAO Siyu , XIE Jing , XU Lixin , YE Mingfu , WAN Chao","doi":"10.1016/S1872-5813(24)60442-1","DOIUrl":"10.1016/S1872-5813(24)60442-1","url":null,"abstract":"<div>Cobalt nitrate and copper nitrate was mixed to prepare solution A. Phenyldicarboxylic acid and N,N-dimethylformamide was mixed to prepare solution B. Co/Cu Lavashield skeleton series materials (Co/Cu-MIL precursors) was then synthesized by mixing the above two solution via solvothermal method. The precursor was further carbonized to produce the MOFs derivatives, i.e. bimetallic carbon nanorods (CoxCu1–x/CNR) catalysts. The morphology and composition of the catalysts were explored by SEM, TEM, XRD, XPS and other characterization means. The results showed that CoxCu1–x/CNR was successfully obtained after calcination of Co/Cu-MIL at high temperature. The activity of the catalyst was optimal when x=0.5, the solvothermal temperature of 120 °C and the calcination temperature of 650 °C. The TOF value of the Co0.5Cu0.5/CNR catalyst for the hydrolysis of ammonia borane for the production of hydrogen was 2718.21 h–1 with activation energy of 51.64 kJ/mol. The catalyst had good cyclic stability. Although the activity decreased, the conversion of AB still maintained 100% after 10 cycles.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 9","pages":"Pages 1307-1317"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164364","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

Ce-doped cobalt-based hydroxide assisted with low-temperature molten salt for industrial oxygen evolution reaction 低温熔盐辅助掺杂钴的氢氧化物用于工业氧进化反应

燃料化学学报 Pub Date : 2024-09-01 DOI: 10.1016/S1872-5813(24)60456-1

WANG Fuli , LÜ Qianxi , DONG Yiwen , XIE Jingyi , WANG Zhicai , DONG Bin , CHAI Yongming

{"title":"Ce-doped cobalt-based hydroxide assisted with low-temperature molten salt for industrial oxygen evolution reaction","authors":"WANG Fuli , LÜ Qianxi , DONG Yiwen , XIE Jingyi , WANG Zhicai , DONG Bin , CHAI Yongming","doi":"10.1016/S1872-5813(24)60456-1","DOIUrl":"10.1016/S1872-5813(24)60456-1","url":null,"abstract":"<div>Developing low cost and high-performance oxygen evolution electrocatalysts is significant to improve the efficiency of water electrolysis for large-scale hydrogen production. Cobalt hydroxide is a promising electrocatalyst for oxygen evolution reaction (OER), but its poor conductivity and activity seriously restrict the practical application. A simple one-step low temperature molten salt method was applied to successfully synthesize the Ce-doped cobalt hydroxide nitrate (Ce-CoNH/CF), which exhibits outstanding OER performance with a low overpotential of 448 mV at the current density of 1000 mA/cm2 in 1 mol/L KOH. The remarkable performance of Ce-CoNH/CF electrode in OER may be the comprehensive result of fast reaction kinetics, large electrochemical active specific surface area (ECSA) and small charge transfer resistance (Rct) as revealed by the Tafel, cyclic voltammetry (CV) and electrochemical impedance spectra (EIS) analysis. Under the simulated industrial test conditions (6 mol/L KOH, 70 °C), the Ce-CoNH/CF electrode still displays excellent OER performance.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 9","pages":"Pages 1299-1306"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1872581324604561/pdf?md5=d909c8fe5e1fe3d679ed6df672c58997&pid=1-s2.0-S1872581324604561-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164368","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

Refined Ni, Co-induced synthesis of NiCoP nanoparticles uniformly embedded in NCNTs: A robust dual-functional electrocatalyst for water splitting 精炼镍，共诱导合成均匀嵌入 NCNT 的 NiCoP 纳米粒子：一种稳定的双功能水分离电催化剂

燃料化学学报 Pub Date : 2024-08-01 DOI: 10.1016/S1872-5813(24)60446-9

Xupeng ZHANG , Junling ZHAN , Ying WANG , Qun LIU , Yu ZHANG , Jiabo WANG , Li CHEN

{"title":"Refined Ni, Co-induced synthesis of NiCoP nanoparticles uniformly embedded in NCNTs: A robust dual-functional electrocatalyst for water splitting","authors":"Xupeng ZHANG , Junling ZHAN , Ying WANG , Qun LIU , Yu ZHANG , Jiabo WANG , Li CHEN","doi":"10.1016/S1872-5813(24)60446-9","DOIUrl":"10.1016/S1872-5813(24)60446-9","url":null,"abstract":"<div>Ni, Co-induced highly distributed NiCoP nanoparticles embedded nitrogen-doped carbon nanotubes (NCNTs) (NiCo/NiCoP-NCNTs) were directly synthesized by a one-step phosphorization and carbonization process. As a bifunctional electrocatalyst for water splitting, NiCo/NiCoP NCNTs show impressive catalytic performance with an overpotential of only 206 mV for the hydrogen evolution reaction and 360 mV for the oxygen evolution reaction in 0.5 mol/L H2SO4 and 1 mol/L KOH solutions, respectively. In addition, NiCo/NiCoP NCNTs maintain a stable cell voltage of 1.68 V at 10 mA/cm2 with only a 10% decrease in current density over 48 h, showing remarkable stability. The improved catalytic activity can be attributed to the integration of NiCoP nanoparticles and the synergies between NCNTs and NiCo alloy. Additionally, the improved electrocatalytic performance can be attributed to the increased electrochemically active surface area and the reduced electron transfer resistance of the NiCo/NiCoP-NCNTs. Overall, the NiCo/NiCoP-NCNTs demonstrated significant performance for advanced water electrolysis applications.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 8","pages":"Pages 1173-1183"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950011","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

Effect of the metal-support interaction in the Cu/ZnO catalyst on its performance in the hydrogenation of furfural to furfuryl alcohol Cu/ZnO 催化剂中金属与载体相互作用对糠醛加氢制糠醇性能的影响

燃料化学学报 Pub Date : 2024-08-01 DOI: 10.1016/S1872-5813(24)60445-7

Xinrui YU, Jinyu ZHANG, Haixing YANG, Siying CHONG, Guoguo LIU, Yajing ZHANG, Kangjun WANG

{"title":"Effect of the metal-support interaction in the Cu/ZnO catalyst on its performance in the hydrogenation of furfural to furfuryl alcohol","authors":"Xinrui YU, Jinyu ZHANG, Haixing YANG, Siying CHONG, Guoguo LIU, Yajing ZHANG, Kangjun WANG","doi":"10.1016/S1872-5813(24)60445-7","DOIUrl":"10.1016/S1872-5813(24)60445-7","url":null,"abstract":"<div>A series of Cu/ZnO catalysts were prepared by the coprecipitation method and the effect of Cu/Zn ratio on the strong metal support interaction (SMSI) as well as its relation to the catalytic performance of Cu/ZnO in the gaseous hydrogenation of furfural to furfuryl alcohol was investigated. The H2-TPR, XRD, SEM, TEM and XPS characterization results reveal that there exists the SMSI effect in the Cu/ZnO catalyst that influences the catalyst microstructure. ZnO support, acting as a geometric modifier on the active metal Cu particles, has a significant influence on the electronic state of the surface Cu species. The strength of SMSI is related to the Cu/Zn ratio and the SMSI strength of various Cu/ZnO catalysts follows the order of 20Cu/ZnO> 40Cu/ZnO> 60Cu/ZnO> 80Cu/ZnO. Under the same reaction conditions, the lifetime of the 20Cu/ZnO catalyst with a furfural conversion of above 80% is only 5 h, in comparison with the lifetime of 28 h for the 60Cu/ZnO catalyst. That is, appropriate SMSI can enhance the stability of the Cu/ZnO catalyst in the hydrogenation of furfural to furfuryl alcohol, whereas excessive SMSI is detrimental to the catalyst activity.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 8","pages":"Pages 1045-1056"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950161","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

The effect of hydrothermal pretreatment on the catalytic performance of Zn/HZSM-5 catalysts for ethylene aromatization reaction 水热预处理对乙烯芳构化反应 Zn/HZSM-5 催化剂催化性能的影响

燃料化学学报 Pub Date : 2024-08-01 DOI: 10.1016/S1872-5813(24)60448-2

Jia-bei SHAO , Bai-chao LI , Mei DONG , Wei-bin FAN , Zhang-feng QIN , Jian-guo WANG

{"title":"The effect of hydrothermal pretreatment on the catalytic performance of Zn/HZSM-5 catalysts for ethylene aromatization reaction","authors":"Jia-bei SHAO , Bai-chao LI , Mei DONG , Wei-bin FAN , Zhang-feng QIN , Jian-guo WANG","doi":"10.1016/S1872-5813(24)60448-2","DOIUrl":"10.1016/S1872-5813(24)60448-2","url":null,"abstract":"<div>To address the issue of coking and deactivation of Zn/HZSM-5 catalysts used for lightolefins aromatization, a high-temperature hydrothermalmethod was employed for catalyst pretreatment. The catalysts were characterized using XRD, N2 physical adsorption-desorption, NH3-TPD, Py-FTIR, XPS, and TG techniques. The effect of high-temperaturehydrothermal pretreatment on the catalytic performance and stability of the catalyst was investigated using ethylene aromatization as a probe reaction. The results showed that the Zn/HZSM-5 catalyst exhibited excellent catalytic performance after48 h of high-temperature hydrothermal pretreatment. Although the conversion of ethylene slightly decreased, the catalyst lifetime was significantly extended, increasing from 72to 216 h, while the aromatics selectivity remained above 60%. It was suggested that the hydrothermal treatment enhanced the interaction between ZnO species and Brønsted acid sites, promoting the generation of ZnOH+ species. This not only suppressed the hydrogen transfer reaction but also significantly enhanced the dehydrogenation performance of the catalyst, improving the selectivity towards hydrogen. Additionally, the catalyst exhibited increased carbon capacity and reduced carbon deposition rate after hydrothermal treatment, demonstrating excellent anti-coking properties.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 8","pages":"Pages 1079-1087"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950162","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

Promoted stability of Cu/ZnO/Al2O3 catalysts formethanol production from CO2 hydrogenation by La modification 通过 La 改性提高 Cu/ZnO/Al2O3 催化剂在二氧化碳加氢制乙醇过程中的稳定性

燃料化学学报 Pub Date : 2024-08-01 DOI: 10.1016/S1872-5813(24)60438-X

Mengmeng NIU , Yanan JIANG , Xian ZHANG , Cuijuan ZHANG , Yuan LIU

{"title":"Promoted stability of Cu/ZnO/Al2O3 catalysts formethanol production from CO2 hydrogenation by La modification","authors":"Mengmeng NIU , Yanan JIANG , Xian ZHANG , Cuijuan ZHANG , Yuan LIU","doi":"10.1016/S1872-5813(24)60438-X","DOIUrl":"10.1016/S1872-5813(24)60438-X","url":null,"abstract":"<div>Deactivation of Cu/ZnO/Al2O3 catalysts in CO2 hydrogenation to methanol reaction is one of the main reasons limiting their application. We synthesized a series of La modified Cu/ZnO/Al2O3 catalysts by adding different contents of La to improve the stability. In the 100 h short-term stability test at 200 °C under 3 MPa with a GHSV of 12000 mL/(g·h), the unmodified Cu/ZnO/Al2O3 catalysts degraded obviously over 100 h. In sharp contrast, the stability was significantly promoted by the addition of La. The best activity was achieved with 5% La added samples (4% CO2 conversion and 85% methanol selectivity),which also showed impressive stability over 1000 h except about 17% deactivation during the initial 190−220 h. The X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) results revealed that the addition of 5% La improved the dispersion of Cu and Zn, inhibited the sintering of Cu, stabilized the Cu0/+ species and retarded oxidation of Cu in catalysts, which attributed to the high stability of the catalysts.</div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":"52 8","pages":"Pages 1095-1102"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141950009","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

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