Catalysis Research最新文献_第5页

Acknowledgement to Reviewers of Catalysis Research in 2022 感谢《催化研究》2022年审稿人

Catalysis Research Pub Date : 2023-01-04 DOI: 10.21926/cr.2301003

Catalysis Research Editorial Office

引用次数: 0

Iron Doped Titania/Polyaniline Composite: An Efficient Electrocatalyst for Hydrogen Evolution Reaction in Acidic Medium 铁掺杂钛/聚苯胺复合材料:酸性介质中析氢反应的高效电催化剂

Catalysis Research Pub Date : 2023-01-04 DOI: 10.21926/cr.2301002

Suman Lahkar, Richa Brahma, S. Dolui

引用次数: 0

Enhancement of Fischer-Tropsch Synthesis by Periodical Draining of the Wax-Filled Pores of a Cobalt Catalyst by Hydrogenolysis 氢解周期性排干钴催化剂的蜡填充孔增强费托合成

Catalysis Research Pub Date : 2023-01-03 DOI: 10.21926/cr.2301001

Carsten Unglaub, J. Tiessen, A. Jess

引用次数: 1

Ethanol Oxidation on Gold Nanowire Containing Oxygen Impurities: A Study by Ab Initio Molecular Dynamics Simulations 含氧杂质金纳米线的乙醇氧化:从头算分子动力学模拟研究

Catalysis Research Pub Date : 2022-12-14 DOI: 10.21926/cr.2204043

Otto V M Bueno, M. San-Miguel, E. D. da Silva

引用次数: 0

Development and Testing of Ni-Cu Bimetallic Catalysts for Effective Syngas Production via Low-Temperature Methane Steam Reforming 低温甲烷蒸汽重整制合成气Ni-Cu双金属催化剂的研制与试验

Catalysis Research Pub Date : 2022-12-06 DOI: 10.35702/catalres.10004

Martin Khzouz, B. Fakhim, S. Babaa, Mohammad Ghaleeh, Farooq Sher, E. Gkanas

引用次数: 0

A Piezo Drive for Nano Chemistry Research 用于纳米化学研究的压电驱动器

Catalysis Research Pub Date : 2022-12-05 DOI: 10.35702/catalres.10003

Afonin Sm

引用次数: 0

Fabrication and Catalytic Property of an Ordered Terpyridine Pd(II)/Ni(II) Catalytic Monolayer for Suzuki Coupling Reactions 铃木偶联反应中三元吡啶Pd(II)/Ni(II)单分子膜的制备及其催化性能

Catalysis Research Pub Date : 2022-12-02 DOI: 10.21926/cr.2204042

Wen Wang, Sa Bi, Huanhuan Li, Tiesheng Li

{"title":"Fabrication and Catalytic Property of an Ordered Terpyridine Pd(II)/Ni(II) Catalytic Monolayer for Suzuki Coupling Reactions","authors":"Wen Wang, Sa Bi, Huanhuan Li, Tiesheng Li","doi":"10.21926/cr.2204042","DOIUrl":"https://doi.org/10.21926/cr.2204042","url":null,"abstract":"Fabrication, arrangement, and controllable composition of ordered organometallic films are critical for designing a highly active catalyst and investigating the catalytic mechanism. In this paper, an organometallic terpyridine Pd(II)/Ni(II) monolayer linked on the silicon substrate surface (denoted as Si-Tpy-Pd1/Ni1) was prepared and characterized using water contact angle, ultraviolet spectra, X-ray diffraction, scanning electron microscopy, and X-ray photoelectron microscopy. Si-Tpy-Pd1/Ni1 exhibited high catalytic activity, substrate applicability, and reusability after 5 runs. During recycling, the deactivation was induced by the aggregation of active Pd/Ni nanoparticles. The catalytic mechanism was heterogeneous and occurred on the Si-Tpy-Pd1/Ni1 monolayer surface; the mechanism was confirmed using hot filtrate, poison test, and a three-phase experiment. The real active center was Pdδ–/Niδ+ and was formed in situ on the organometallic monolayer surface, which acted as a precursor with a synergistic effect between Pd and Ni. The electron density of Pd became more negative because of electron transfer from Ni to Pd, which facilitated the oxidative addition reaction.","PeriodicalId":178524,"journal":{"name":"Catalysis Research","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115890552","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

Biocatalyzed Hydrolysis of Residual Oils and Proteins from Flax and Camelina Oilseed Press Cakes Using Lipase and Protease 脂肪酶和蛋白酶对亚麻和亚麻籽压榨饼残油和蛋白质的生物催化水解

Catalysis Research Pub Date : 2022-11-17 DOI: 10.21926/cr.2204041

O. Piccolo, E. Parodi, A. Petri

引用次数: 0

Effect of Different Additives on the Structure and Activity of β-Galactosidase Immobilized on a Concanavalin A–Modified Silica-Coated Titanium Dioxide Nanocomposite 不同添加剂对芋豆蛋白a修饰二氧化钛纳米复合材料固定化β-半乳糖苷酶结构和活性的影响

Catalysis Research Pub Date : 2022-11-17 DOI: 10.21926/cr.2204040

A. Shafi, Q. Husain

{"title":"Effect of Different Additives on the Structure and Activity of β-Galactosidase Immobilized on a Concanavalin A–Modified Silica-Coated Titanium Dioxide Nanocomposite","authors":"A. Shafi, Q. Husain","doi":"10.21926/cr.2204040","DOIUrl":"https://doi.org/10.21926/cr.2204040","url":null,"abstract":"Interpreting the relationship between the activity and structure of β-galactosidase is necessary to perceive the impact of the enzyme’s conformation on its catalysis. The current study thoroughly explains the effects of additives such as ethylenediaminetetraacetic acid (EDTA), sodium dodecyl sulfate (SDS), dithiothreitol (DTT), and urea on β-galactosidase activity and structure. β-Galactosidase activity was determined at various ionic strengths and temperatures as a function of time. Structural studies evaluating changes in the secondary and tertiary structures of the enzyme in the presence of the additives were conducted using ultraviolet (UV)-visible and intrinsic fluorescence spectroscopy. The immobilized enzyme showed enhanced stability under different environmental conditions. Activity assays demonstrated concentration-dependent inactivation of β-galactosidase in the presence of SDS and urea, which suggests that hydrophobic and charged residues are present near the active site. In the presence of EDTA, loss in activity was noted, which confirms that β-galactosidase is a metalloenzyme. Enhancement in enzyme activity in the presence of DTT suggests the presence of a cysteine residue near the catalytic center. In UV-visible and intrinsic fluorescence spectroscopy studies, the native enzyme showed significant conformational transitions in the presence of DTT, SDS, and urea and very few changes in the presence of EDTA. However, the immobilized enzyme could resist significant structural changes. In conclusion, this study provides a detailed description of the association between the activity and conformational stability of β-galactosidase.","PeriodicalId":178524,"journal":{"name":"Catalysis Research","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114497892","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: 1

Enhanced Photocatalytic Degradation of p-Nitrophenol and Phenol Red Through Synergistic Effects of a CeO2-TiO2 Nanocomposite CeO2-TiO2纳米复合材料协同作用增强对硝基苯酚和酚红的光催化降解

Catalysis Research Pub Date : 2022-11-03 DOI: 10.21926/cr.2204039

Pawan S. Rana, P. Solanki, T. Dhiman, A. Ahlawat

{"title":"Enhanced Photocatalytic Degradation of p-Nitrophenol and Phenol Red Through Synergistic Effects of a CeO2-TiO2 Nanocomposite","authors":"Pawan S. Rana, P. Solanki, T. Dhiman, A. Ahlawat","doi":"10.21926/cr.2204039","DOIUrl":"https://doi.org/10.21926/cr.2204039","url":null,"abstract":"Organic compounds are one of the most severe pollutants occurring in the environment. Hence, it is important to remove these compounds from the environment through remediation processes such as photocatalysis. The present study investigated the photocatalytic degradation of p-nitrophenol (NP) and phenol red (PR) using a cerium oxide-titanium oxide nanocomposite (CeO2-TiO2nc) under UV light. CeO2-TiO2nc was synthesized using the co-precipitation method. An X-ray diffraction (XRD) analysis confirmed the phase purity of the material. A UV-Vis absorption study revealed a broad peak in the 250–310 nm region. The photocatalytic study was performed under three irradiation conditions: no light, visible light (λ > 400 nm), and UV light (λ < 400 nm). The maximum degradation percentage for NP and PR was 97.3% and 99.8%, respectively, with the reaction rate constant (k) of 0.42 and 0.54, respectively. This is the first study to utilize the synergistic effects of TiO2 and CeO2 for degrading NP and PR. Over 97% degradation was achieved for both the compounds in 80 min; this result shows the high photocatalytic activity of CeO2-TiO2nc. Thus, CeO2-TiO2nc can be used as a cost-effective adsorbent with a high capacity to degrade harmful organic compounds.","PeriodicalId":178524,"journal":{"name":"Catalysis Research","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125675102","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: 3