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WVOx Supported on Industrial Al2O3, SiO2, AC, TiO2–Al2O3 for Catalytic Dehydration of Gas-Glycerol to Acrolein 以工业 Al2O3、SiO2、AC、TiO2-Al2O3 为支撑的 WVOx 催化气体-甘油脱水生成丙烯醛
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-13 DOI: 10.1007/s10562-024-04822-8
Xiansong Xia, Liangqi Li, Lin Chen, Qi Yao, Miao Liu, Hai Lan
{"title":"WVOx Supported on Industrial Al2O3, SiO2, AC, TiO2–Al2O3 for Catalytic Dehydration of Gas-Glycerol to Acrolein","authors":"Xiansong Xia, Liangqi Li, Lin Chen, Qi Yao, Miao Liu, Hai Lan","doi":"10.1007/s10562-024-04822-8","DOIUrl":"https://doi.org/10.1007/s10562-024-04822-8","url":null,"abstract":"<p>WVO<sub>x</sub> bi-metal oxides supported on the cost-effective industrial mesoprous Al<sub>2</sub>O<sub>3</sub>, SiO<sub>2</sub>, active carbon (AC), and TiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub> with different specific surface areas (WVO/Al<sub>2</sub>O<sub>3</sub>, WVO/SiO<sub>2</sub>, WVO/AC, and WVO/TiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub>) were designed and prepared through co-impregnation method for large-scale bio-glycerol dehydration to acrolein. The XRD, BET, SEM–EDS, XPS, and NH<sub>3</sub>-TPD characterization results revealed the WO<sub>3</sub>–VO<sub>x</sub> (V<sup>4+</sup>/V<sup>5+</sup>) species existed with better dispersion, lower molar ratio of V<sup>4+</sup>/V<sup>5+</sup>, and enhanced strength of surface acid sites on the developed mesoporous TiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub> in comparison with that on the mesoporous Al<sub>2</sub>O<sub>3</sub>, SiO<sub>2</sub>, and AC, demonstrating strong interaction of WO<sub>3</sub>–VO<sub>x</sub> species with the TiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub> support and accounting for the acrolein selectivity over catalysts following the order of WVO/TiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub> (75.8%) &gt; WVO/AC (71.2%) &gt; WVO/SiO<sub>2</sub> (55.3%) &gt; WVO/Al<sub>2</sub>O<sub>3</sub> (42.8%). Over the WVO/TiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub>, gas-glycerol conversion reached above 97.0% with acrolein selectivity of about 75.0% under the gas hourly space velocity (GHSV) of 120–360 h<sup>−1</sup>, and maintained an improved catalytic stability.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3><p>The acrolein selectivity over the prepared catalysts followed the order of WVO/TiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub> &gt; WVO/AC &gt; WVO/SiO<sub>2</sub> &gt; WVO/Al<sub>2</sub>O<sub>3</sub>, Among them, the WVO/TiO<sub>2</sub>–Al<sub>2</sub>O<sub>3</sub> catalyst demonstrated a low V<sup>4+</sup>/V<sup>5+</sup> ratio, surface acid sites, and exceptional catalytic performance with a gas-glycerol conversion rate of 97.2% and an acrolein selectivity of 75.8%. Even after continuous reaction for 16 h, both gas-glycerol conversion and acrolein selectivity remained above 75% and 90%, respectively. This study presents a remarkable advancement in the development of industrial catalysts with outstanding performance in terms of efficiency, stability, and cost-effectiveness. Moreover, this catalyst shows great promise for its utilization in acrolein synthesis via glycerol dehydration.</p>\u0000","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","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 CuO/Activated Carbon Fiber Filter for Adsorption/Catalytic Degradation of Residual Chlorine in Drinking Water 制备用于吸附/催化降解饮用水中余氯的氧化铜/活性碳纤维过滤器
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-13 DOI: 10.1007/s10562-024-04829-1
Jiayi Meng, Hengliang Mo, Tianyu Li, Manman Liu, Yili Chen, Suoding Li, Pingyu Wan, Long Lv, Hengyu Yang, Wenfang Zhao, Luocong Wang
{"title":"Preparation of CuO/Activated Carbon Fiber Filter for Adsorption/Catalytic Degradation of Residual Chlorine in Drinking Water","authors":"Jiayi Meng, Hengliang Mo, Tianyu Li, Manman Liu, Yili Chen, Suoding Li, Pingyu Wan, Long Lv, Hengyu Yang, Wenfang Zhao, Luocong Wang","doi":"10.1007/s10562-024-04829-1","DOIUrl":"https://doi.org/10.1007/s10562-024-04829-1","url":null,"abstract":"<p>Residual chlorine has a bactericidal effect, but it may react with natural organic matter in water to produce harmful substances. In this work, we report an efficient residual chlorine removal filter with activated carbon fiber (ACF) as adsorption carrier and CuO as residual chlorine degradation catalyst. Experimental results show that CuO has high catalytic efficiency and no attenuation of catalytic performance in 2924 h. The CuO is loaded on the surface of ACF by dipping-calcinating method. When the loading rate is 1.5%, the CuO distribution is uniform without defects and agglomeration. Continuous-flow experiment result shows that 1.5%-CuO/ACF filter can treat water amount 2.2 times as long as that for single ACF filter (residual chlorine concentration &lt; 0.1 mg/L). Weak acidity and rising temperature can improve the reaction activity and increase the degradation amount of residual chlorine. The composite filter has excellent adsorption performance for Cu<sup>2+</sup>, showing the Cu<sup>2+</sup> concentration in the produced water is less than 0.1 mg/L after filter treatment, which is in line with the National Drinking Water Standards, and in agreement with the Standard for Safety Assessment of Water Transmission and Distribution Equipment and Protective Materials for Drinking Water (GB/T17219-1998) of Immersion Experiment, indicating that 1.5%-CuO/ACF filter has good stability and safety.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient Hydrogen Production by Combined Reforming of Methane over Perovskite-Derived Promoted Ni Catalysts 在透辉石衍生的促进镍催化剂上通过甲烷联合转化高效制氢
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-13 DOI: 10.1007/s10562-024-04805-9
E. V. Matus, E. N. Kovalenko, O. B. Sukhova, S. A. Yashnik, I. Z. Ismagilov, M. A. Kerzhentsev, S. R. Khairulin
{"title":"Efficient Hydrogen Production by Combined Reforming of Methane over Perovskite-Derived Promoted Ni Catalysts","authors":"E. V. Matus, E. N. Kovalenko, O. B. Sukhova, S. A. Yashnik, I. Z. Ismagilov, M. A. Kerzhentsev, S. R. Khairulin","doi":"10.1007/s10562-024-04805-9","DOIUrl":"https://doi.org/10.1007/s10562-024-04805-9","url":null,"abstract":"<p>Efficient production of H<sub>2</sub> by combined (steam/CO<sub>2</sub>; steam/O<sub>2</sub>) reforming of CH<sub>4</sub> was comparatively studied over perovskite-derived promoted Ni catalysts. The process performance was improved by regulating the redox and structural properties of the LaNi<sub>0.99</sub>M<sub>0.01</sub>O<sub>3</sub> catalysts through promotion (M = Pt, Pd, Re, Mo, Sn). The catalysts were synthesized using the citrate sol–gel method, tested in combined reforming of methane and studied by X-ray fluorescence analysis, thermal analysis, N<sub>2</sub> adsorption, X-ray diffraction, electron microscopy, temperature-programed hydrogen reduction to elucidate the impact of catalyst properties on their activity and resistance to re-oxidation and formation of carbon deposits under reaction conditions. It was shown that LaNi<sub>0.99</sub>M<sub>0.01</sub>O<sub>3</sub> catalysts after calcination at 850 °C in air have a perovskite structure that was destroyed after reductive activation with formation of metal Ni<sup>o</sup> particles with an average size of ~ 25 nm on the surface of lanthanum oxide/hydroxide. The resistance to re-oxidation of Ni<sup>o</sup> particles depends on the type of promoter and is maximum in the case of M = Re. It was established that the type of promoter affects the conversion of reagents (CH<sub>4</sub>, CO<sub>2</sub>) and the H<sub>2</sub> yield, which at 700 °C increases in the series of promoters Sn &lt; Mo &lt; Pt &lt; Pd &lt; Re in the case of steam/CO<sub>2</sub> reforming and Pt &lt; Sn &lt; Mo &lt; Pd &lt; Re with steam/O<sub>2</sub> reforming. The optimal composition of catalyst was identified: among the studied samples, LaNi<sub>0.99</sub>Re<sub>0.01</sub>O<sub>3</sub> is characterized by a higher specific surface area, average reduction ability and high resistance to re-oxidation and coking. At 850 °C it provides the H<sub>2</sub> yield of 95 and 50% at complete CH<sub>4</sub> conversion in steam/CO<sub>2</sub> and steam/O<sub>2</sub> reforming, respectively.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Modified Two-Step Coprecipitation Method Provides Better CuZnO/Al2O3 Methanol Synthesis Catalyst with More Uniform Distribution of Alumina 改进的两步共沉淀法可提供更好的 CuZnO/Al2O3 甲醇合成催化剂,且氧化铝分布更均匀
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-13 DOI: 10.1007/s10562-024-04796-7
Qiong Wang, Kang Xiao, Haitao Li, Feng Lu, Quli Fan
{"title":"A Modified Two-Step Coprecipitation Method Provides Better CuZnO/Al2O3 Methanol Synthesis Catalyst with More Uniform Distribution of Alumina","authors":"Qiong Wang, Kang Xiao, Haitao Li, Feng Lu, Quli Fan","doi":"10.1007/s10562-024-04796-7","DOIUrl":"https://doi.org/10.1007/s10562-024-04796-7","url":null,"abstract":"<p>A modified two-step coprecipitation method has been formulated to prepare a series of model CuZnO/Al<sub>2</sub>O<sub>3</sub> catalysts for methanol synthesis from syngas. Evaluation at industrially relevant condition showed slightly higher activity and much higher stability for model catalysts than for a commercial catalyst. Due to the same CuZn-binary precursor, the model catalysts had similar structural properties with large specific surface area and pore volume, small CuO crystallites and good reducibility, resembling that of the commercial catalyst. However, the model catalysts showed much better uniformity of alumina distribution, which accounted for their better performance. Strong positive correlation between the deactivation rate and the coefficient of variation of Al/Zn indicates the uniformity of alumina distribution plays an important role in determining stability. Specifically, CuZnO/Al<sub>2</sub>O<sub>3</sub> catalysts with alumina distributed more uniformly had higher stability. This work demonstrated that the formulated modified two-step coprecipitation could provide excellent CuZnO/Al<sub>2</sub>O<sub>3</sub> catalysts for industrial applications. Additionally, it also affords new clues for the development of even better industrial catalysts.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication Condition-Dependent Photocatalytic Ciprofloxacin (CIP) Antibiotic Degradation of NaTiOx-Derived Brookite TiO2 Nanorods 制备条件依赖性光催化环丙沙星 (CIP) 抗生素降解的 NaTiOx 衍生 Brookite TiO2 纳米棒
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-13 DOI: 10.1007/s10562-024-04813-9
Jingru Hu, Minjun Jiang, Bingwen Hu, Gang Cheng
{"title":"Fabrication Condition-Dependent Photocatalytic Ciprofloxacin (CIP) Antibiotic Degradation of NaTiOx-Derived Brookite TiO2 Nanorods","authors":"Jingru Hu, Minjun Jiang, Bingwen Hu, Gang Cheng","doi":"10.1007/s10562-024-04813-9","DOIUrl":"https://doi.org/10.1007/s10562-024-04813-9","url":null,"abstract":"<p>Remediation of antibiotics by photocatalysis technique has been regarded as a promising route to tackle with the environmental pollution affecting human survival and development. In this work, brookite TiO<sub>2</sub> nanorods with different oxygen vacancy have been synthesized through tailoring the volume of ethylene glycol by hydrothermally treatment with NaTiOx-nanoassembly. After constitute and morphology confirmation with different characterizations, their photocatalytic performances are evaluated via ciprofloxacin (CIP) antibiotic degradation experiments. The result shows that the TiO<sub>2</sub>-0 has the highest photocatalytic efficiency towards CIP degradation, comparing with TiO<sub>2</sub>-15 and TiO<sub>2</sub>-30 samples. Although the TiO<sub>2</sub>-30 has high concentration oxygen vacancy, it exhibits excellent adsorption ability in the dark, rather than CIP degradation rate. The photo/electrochemical tests suggest the photo-generated electron lifetime, charge transfer ability, and the effective active sites on the material’s surface are inversely proportional to the concentration of oxygen vacancies. It also concludes that rational fabrication conditions tailoring of the photocatalyst could optimize the corresponding capability in the antibiotic degradation process. In addition, the possible degradation pathway is also proposed based on the high resolution mass spectrometry (HRMS), and the acute toxicity changes in the degradation process are also predicted.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Catalytic Cracking of Waste Cooking Oil to Alkane-Based Hydrocarbon Over Activated Carbon Supported La and Ce Oxides 以 La 和 Ce 氧化物为支撑的活性炭催化裂解废食用油生成烷基碳氢化合物
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-12 DOI: 10.1007/s10562-024-04807-7
Samah Zaki Naji, Ching Thian Tye, Abdul Rahman Mohamed
{"title":"Catalytic Cracking of Waste Cooking Oil to Alkane-Based Hydrocarbon Over Activated Carbon Supported La and Ce Oxides","authors":"Samah Zaki Naji, Ching Thian Tye, Abdul Rahman Mohamed","doi":"10.1007/s10562-024-04807-7","DOIUrl":"https://doi.org/10.1007/s10562-024-04807-7","url":null,"abstract":"<p>The increasing global demand for fuel, along with pressing environmental regulations and concerns, and the need for energy security, all point to the biofuel industry seeing rapid growth in the near future. The objective of this study was to study the performance of a series of activated carbon (AC) supported La and Ce oxide catalysts in the catalytic cracking of waste cooking oil into alkane-based hydrocarbon. Coconut-shell activated carbon was loaded with various amounts of lanthanum and cerium were prepared via wet impregnation. The catalytic cracking activity was evaluated in a fixed bed reactor under N<sub>2</sub> flow at 450 °C and a weight hourly space velocity of 8 h<sup>−1</sup> at 60 min. The physical and chemical properties of the prepared catalysts were characterized by BET, SEM–EDX, XRD, TPD-NH<sub>3</sub>/CO<sub>2</sub>, FTIR, and TGA. The results indicated that 5 wt% La/AC performed superiorly with a liquid product of 87.03% which composed of 99.09% hydrocarbons, that were mostly alkane (79.89%) with n-(C<sub>15</sub> + C<sub>17</sub>) 66% selectivity (66.13%).</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Confinement of Ultrasmall Pd Clusters Within Nanosized ZIF-8-Derived Cu-N-C Materials for Efficient and Stable Synthesis of Glycerol Carbonate from Glycerol 在纳米级 ZIF-8 衍生的 Cu-N-C 材料中封闭超小型钯团簇,从甘油中高效稳定地合成碳酸甘油酯
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-12 DOI: 10.1007/s10562-024-04799-4
Jiawen Zhang, Zhihao Lv, Pingbo Zhang, Mingming Fan, Pingping Jiang, Yan Leng
{"title":"Confinement of Ultrasmall Pd Clusters Within Nanosized ZIF-8-Derived Cu-N-C Materials for Efficient and Stable Synthesis of Glycerol Carbonate from Glycerol","authors":"Jiawen Zhang, Zhihao Lv, Pingbo Zhang, Mingming Fan, Pingping Jiang, Yan Leng","doi":"10.1007/s10562-024-04799-4","DOIUrl":"https://doi.org/10.1007/s10562-024-04799-4","url":null,"abstract":"<p>Copper-Nitrogen-Carbon (Cu-N-C) materials, derived from zeolite imidazolium frameworks, serve as promising carriers for catalyzing glycerol carbonylation reactions due to their modifiable pore size structure, enhanced catalytic selectivity, and stability. However, conventional palladium loading often results in the susceptibility of Cu-Pd co-catalysis loss, impeding practical application. In this investigation, we employed an in-situ confinement technique to embed polyvinylpyrrolidone (PVP)-modified palladium nanoparticles within the Cu-ZIF-8 metal framework, followed by direct calcination under a nitrogen atmosphere. This method yielded uniform-sized and shaped copper-palladium alloy catalysts, denoted as Pd@Cu-NC. Comparative analysis with catalysts prepared via impregnation followed by calcination revealed significantly enhanced stability of the resulting Pd@Cu-NC catalysts, with improved selectivity and stability of the active components. Notably, catalyst stability was markedly improved, and active component loss was mitigated. Under optimized conditions, a remarkable yield of 90.14% and selectivity of 99.91% were achieved, while retaining 77.43% activity after five cycles. Furthermore, density functional theory (DFT) calculations were employed to simulate the kinetics of carbon monoxide adsorption and glycerol dimethyl acetal (DMA) solution on various substrates. The presence of copper oxide notably reduced the adsorption energy of substrates to carbon monoxide and reaction solutions, thereby lowering the reaction activation energy and enhancing the reaction rate. This computational analysis provides further evidence of the beneficial role of copper oxide in facilitating the carbonylation reaction.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced the Catalytic Performance of CeO2 by Tuning V5+ Doping Amount in Carbonylation of n-Butyl Amine with CO2 通过调节 V5+ 掺杂量提高 CeO2 在正丁基胺与 CO2 的羰基化反应中的催化性能
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-12 DOI: 10.1007/s10562-024-04806-8
Dalei Sun, Kang Cheng, Chen Zhou, Xiangye Liu, Zhiwu Liang
{"title":"Enhanced the Catalytic Performance of CeO2 by Tuning V5+ Doping Amount in Carbonylation of n-Butyl Amine with CO2","authors":"Dalei Sun, Kang Cheng, Chen Zhou, Xiangye Liu, Zhiwu Liang","doi":"10.1007/s10562-024-04806-8","DOIUrl":"https://doi.org/10.1007/s10562-024-04806-8","url":null,"abstract":"<p>CO<sub>2</sub> regeneration and reutilization is considered to be a green and effective route with highly potential for development. CeO<sub>2</sub> showed high catalytic activity for the production of N,N′-dibutylurea through n-butyl amine and CO<sub>2</sub>. Herein, V-doped CeO<sub>2</sub> with different molar ratios of V/Ce (V<sub>x%</sub><i>-</i>CeO<sub>2</sub>, x = 0, 0.4, 0.6, 0.8 and 1.0) were further successfully synthesized and firstly applied to the reaction of CO<sub>2</sub> with n-butyl amine. The reaction results displayed the catalytic performance of CeO<sub>2</sub> were prominently enhanced by doping V<sup>5+</sup> and followed an order of V<sub>0.8%</sub>-CeO<sub>2</sub> &gt; V<sub>0.6%</sub>-CeO<sub>2</sub> &gt; V<sub>1.0%</sub>-CeO<sub>2</sub> &gt; V<sub>0.4%</sub>-CeO<sub>2</sub> &gt; CeO<sub>2</sub>. The reason for the changes in the catalytic activities of CeO<sub>2</sub> with different doping amounts of V<sup>5+</sup> could be closely related to the surface oxygen vacancy and surface weak acidity and weak basicity based on specific analysis of relevant characterization including XRD, BET, Raman, XPS, EPR and NH<sub>3</sub>/CO<sub>2</sub>-TPD.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced Pyro-Photo Catalysis of the BaTiO3/NiB Catalyst for Dye Degradation Driven by Visible Light and Cold–Hot Cycles 在可见光和冷热循环驱动下增强 BaTiO3/NiB 催化剂的热释光催化作用以降解染料
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-11 DOI: 10.1007/s10562-024-04798-5
Mei Ma, Zhihua Liu, Jianguo Zhou
{"title":"Enhanced Pyro-Photo Catalysis of the BaTiO3/NiB Catalyst for Dye Degradation Driven by Visible Light and Cold–Hot Cycles","authors":"Mei Ma, Zhihua Liu, Jianguo Zhou","doi":"10.1007/s10562-024-04798-5","DOIUrl":"https://doi.org/10.1007/s10562-024-04798-5","url":null,"abstract":"<p>The decomposition mechanism of dyes under the synergistic effect of pyroelectric catalysis and photocatalysis was systematically investigated using a BaTiO<sub>3</sub>/NiB catalyst in this paper, and the degradation efficiency of BaTiO<sub>3</sub>/NiB was 97.5% under light and 24 cycles of hot and cold at 25 ~ 65 °C, showing high pyroelectroic catalytic RhB decomposition activity and excellent recoverability. The degradation rate constants of RhB chromophore degradation by Pyro-photocatalytic coupled were 3.2 times as high as those of photocatalysis and 11.8 times as high as those of pyroelectric catalysis. In this study, we used light-assisted electrodeposition to deposit a thin layer of amorphous NiB acid salts onto the surface of a BaTiO<sub>3</sub> photoelectrode aiming to explore its influence on photocharge separation and the catalytic mechanism of NiB in the context of pollutant degradation. The synergies between the pyroelectric internal field and the amorphous Ni–B acid salt thin layer during photogenerated charge separation were extensively explored in this paper, including the introduction of a port for pyroelectric polarization.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":508,"journal":{"name":"Catalysis Letters","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metal Organic Framework–Derived Co and Co-Nx Embedded Mesoporous Carbon Sheets as an Efficient Electrocatalyst Toward the Oxygen Reduction Reaction for Air-Breath Cathode Microbial Fuel Cells 金属有机框架衍生的 Co 和 Co-Nx 嵌入介孔碳薄片作为一种高效电催化剂促进空气呼吸阴极微生物燃料电池的氧气还原反应
IF 2.8 4区 化学
Catalysis Letters Pub Date : 2024-09-11 DOI: 10.1007/s10562-024-04809-5
Long Tang, Xingyun Liu, Zeyong Zhu, Junjie Luo, Song Zhao, Wenyi Wang
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