Catalysis Research最新文献_第4页

Morpholine-Based Novel Ionic Liquid for Synthesis and Characterization of Triazolidinethiones and Their Biological Properties 基于morpholine的新型离子液体用于三唑烷硫酮的合成、表征及其生物学性质

Catalysis Research Pub Date : 2023-03-12 DOI: 10.21926/cr.2301011

Nilam C. Dige, Chandrama Randive, Omkar Tamhane, Rushikesh Ghorpade, S. Kale, Prasad G Mahajan

引用次数: 0

Hazardous Bauxite Red Mud and Ferrous Slag Management to Produce Sustainable Construction Materials 危险铝土矿赤泥和铁渣管理生产可持续建筑材料

Catalysis Research Pub Date : 2023-03-06 DOI: 10.35702/catalres.10006

Vsevolod Mymrin, Kirill Alekseev, Walderson Klitzke, Daniela E. Evaniki, Cleber L Pedroso, Fernando H Passig, Karina Q Carvalho, Charles W I Haminiuk, Rodrigo E Catai

引用次数: 0

Adsorption of Rhodamine-B (RhB) and Regeneration of MCM-41 Mesoporous Silica 罗丹明- b (RhB)的吸附及MCM-41介孔二氧化硅的再生

Catalysis Research Pub Date : 2023-03-01 DOI: 10.21926/cr.2301010

Thiago Rodrigo Barbosa Barros, Thianne Silva Batista Barbosa, Tellys Lins Almeida Barbosa, Meiry Gláucia Freire Rodrigues

{"title":"Adsorption of Rhodamine-B (RhB) and Regeneration of MCM-41 Mesoporous Silica","authors":"Thiago Rodrigo Barbosa Barros, Thianne Silva Batista Barbosa, Tellys Lins Almeida Barbosa, Meiry Gláucia Freire Rodrigues","doi":"10.21926/cr.2301010","DOIUrl":"https://doi.org/10.21926/cr.2301010","url":null,"abstract":"Rhodamine (RhB) adsorption was carried out on MCM-41 and MCM-41 calcined. The effect of parameters such as pH was investigated. The reusability potential of MCM-41 was also established and the mechanism of RhB adsorption was discussed. MCM-41 was synthesized and calcined, with all samples characterized by X-Ray Diffractometry, X-ray Fluorescence by Dispersive Energy, Infrared Spectroscopy, Scanning Electron Microscopy, and Thermogravimetric analysis. The results of the characterization techniques performed confirmed the formation of the MCM-41 structure. During the adsorption of the RhB dye, high removal percentages and rapid kinetics occur in an acid medium. The adsorption kinetics was evaluated by two models: pseudo-first order and pseudo-second order. The pseudo-first-order kinetic model represented the interaction mechanism well during RhB adsorption by MCM-41. However, the pseudo-second-order model better represented the interaction mechanism during RhB adsorption by MCM-41 calcined. The regeneration study found that the MCM-41 and MCM-41 calcined were maintained at 80 and 90% of their original condition after three successive regeneration cycles. The overall results show that the process could be used as a strategy for environmentally sustainable wastewater treatment.","PeriodicalId":178524,"journal":{"name":"Catalysis Research","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121383388","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

Methanol Synthesis Catalyst Waste as the Principal Component of New Sustainable Cementless Concrete 甲醇合成催化剂废料作为新型可持续无水泥混凝土的主要成分

Catalysis Research Pub Date : 2023-02-27 DOI: 10.21926/cr.2301009

V. Mymrin, Reinaldo H. G. Alarcon, Marília A. Guidolin, K. Alekseev, Rogerio J. Hultmann, Walderson Klitzke, K. Q. Carvalho, F. H. Passig, C. Haminiuk, R. E. Catai

引用次数: 0

Enzymatic Hydrolysis of Meat Waste for a Circular Economy 循环经济中肉类废弃物的酶解研究

Catalysis Research Pub Date : 2023-02-16 DOI: 10.21926/cr.2301008

M. Angulo, M. C. Márquez

{"title":"Enzymatic Hydrolysis of Meat Waste for a Circular Economy","authors":"M. Angulo, M. C. Márquez","doi":"10.21926/cr.2301008","DOIUrl":"https://doi.org/10.21926/cr.2301008","url":null,"abstract":"This work demonstrates the possibility of implementing a technology that allows profitable value to be drawn from the meat waste from retail stores. Protein hydrolysate, collagen and fatty acids were recovered from meat waste through enzymatic hydrolysis using a mixture of enzymes: a protease (Alcalase) and a lipase (Resinase). Enzymatic hydrolysis was studied by response surface methodology (RMS). Four independent variables were used to study the response variables. The analysis showed that all factors including protease/proteinic substrate ratio, lipase/lipidic substrate ratio, pH and temperature had a significant effect on responses of recovery of a protein hydrolysate, collagen, and fatty acids. From RSM-generated models, different optimum conditions were obtained depending on the product to be recovered. The economic study showed that operating profit depends on the operating conditions but that, in suitable conditions, it is four or more times higher than that obtained in the transformation of meat waste into meal for animal feed (the current destination of the meat waste that does not go to landfill). Consequently, the enzymatic treatment proposed for meat waste in this work is highly recommendable to maintain a circular economy for this biodegradable waste.","PeriodicalId":178524,"journal":{"name":"Catalysis Research","volume":"127 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129907616","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

Zn(OCOCH3)2·2H2O Catalysed Efficient Preparation of 2-Phenyl-4-Arylmethylidene-5-Oxazolinones under Ultrasonic Condition Zn(OCOCH3)2·2H2O催化超声高效制备2-苯基-4-芳基甲基-5-恶唑啉酮

Catalysis Research Pub Date : 2023-02-15 DOI: 10.21926/cr.2301007

Sadeq Hamood Saleh Azzam, Amreen Khanum, M. A. Pasha

引用次数: 0

The Effects of Ge Substrate Surface States and Au Catalyst Layer Thickness on the Growth of Different GexOy Nanomaterials and Nanocrystals Configurations Using Vapor-Liquid-Solid Method with two Steps Temperature Mode 采用气-液-固两步温度模式研究Ge衬底表面态和Au催化剂层厚度对不同geexoy纳米材料生长和纳米晶体构型的影响

Catalysis Research Pub Date : 2023-01-31 DOI: 10.21926/cr.2301006

Khac An Dao, H. T. Pham, V. V. Hoang

{"title":"The Effects of Ge Substrate Surface States and Au Catalyst Layer Thickness on the Growth of Different GexOy Nanomaterials and Nanocrystals Configurations Using Vapor-Liquid-Solid Method with two Steps Temperature Mode","authors":"Khac An Dao, H. T. Pham, V. V. Hoang","doi":"10.21926/cr.2301006","DOIUrl":"https://doi.org/10.21926/cr.2301006","url":null,"abstract":"Recently the GexOy nanomaterials have been studied intensively due to their interesting electronic materials, which have many particular properties and applications in nanotechnology and nano-devices fabrication. Much work has been done on many different synthesis methods and their properties of Ge and GexOy nanomaterials. However, the effects of the different Ge substrate surface states and Au catalyst layer thicknesses on the formation of different forms/morphologies of nanomaterials (nanowires, nanorods, nanoparticles, and nanocrystals particularly) have yet to be discussed more in detail. This paper outlines the synthesis methods to grow the different GexOy nanomaterials on the different Ge surface states at different Au catalyst layer thicknesses such as mechanically polished surface, deep Chemical etched surface, chemical polishing surface, and initial rough surface. The morphological, and structural properties of GexOy nanomaterials have been investigated using SEM, EDX, and TEM techniques. The formation of different morphological, and structural properties of different GexOy nanomaterials grown have been explained by the effects of the Au/Ge/O droplets/clusters formation situations and surface defects on the Ge substrate surface caused. The growth mechanisms have been explained by the model of the VLS growth method with the Oxide Assist Growth mechanism. The results showed that the effects of the different Ge substrate surface states and Au catalyst layers’ thickness strongly influence the formation of GexOy materials in terms of the sizes, structures, and percentages of elements. The results of the controllable different GexOy nanomaterials have many significant meanings for both theoretical and practical applications in nanomaterials and nano-device fabrication.","PeriodicalId":178524,"journal":{"name":"Catalysis Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131154840","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

Insights into Metallic Ag+, Cu2+, Zn2+ Ions-Induced Bacteriolytic Mechanism against S. Aureus and E. Coli 金属Ag+、Cu2+、Zn2+离子诱导对金黄色葡萄球菌和大肠杆菌的溶菌机制研究

Catalysis Research Pub Date : 2023-01-28 DOI: 10.35702/catalres.10005

T. Ishida

引用次数: 0

Fungal Laccase-Mediated Enhancement of the Bioactivity of Green Algae Extracts 真菌漆酶介导的绿藻提取物生物活性增强研究

Catalysis Research Pub Date : 2023-01-19 DOI: 10.21926/cr.2301004

Stamatia Spyrou, A. Chatzikonstantinou, A. Giannakopoulou, Renia Fotiadou, Silvia Priska, Y. Simos, Aliki Tsakni, D. Peschos, Dimitra P. Houhoula, E. Voutsas, H. Stamatis

{"title":"Fungal Laccase-Mediated Enhancement of the Bioactivity of Green Algae Extracts","authors":"Stamatia Spyrou, A. Chatzikonstantinou, A. Giannakopoulou, Renia Fotiadou, Silvia Priska, Y. Simos, Aliki Tsakni, D. Peschos, Dimitra P. Houhoula, E. Voutsas, H. Stamatis","doi":"10.21926/cr.2301004","DOIUrl":"https://doi.org/10.21926/cr.2301004","url":null,"abstract":"Biomass derived from green marine macroalgae Ulva sp. is considered a rich source of bioactive compounds. In the present study, we demonstrate the increased bioactivity of a phenolic-rich extract derived from green marine macroalgae Ulva intestinalis after its treatment with fungal laccases from Trametes versicolor and Agaricus bisporus. The phenolic composition of the extract, before and after its enzymatic treatment, was determined through several analytical methods. Furthermore, the antioxidant, enzyme-inhibitory, antimicrobial and cytotoxic activity of enzymatically modified and non-modified extracts was comparatively investigated. Depending on the laccase used, the enzyme-modified extracts exhibited different phenolic content and enhanced bioactivities compared to the non-treated ones. The enzymatically modified extracts presented enhanced antimicrobial, anti-lipoxygenase and anti-collagenase activities, and mild cytotoxicity. These results indicate that the proposed biocatalytic process could be applied to produce green macroalgal natural extracts with enhanced bioactivities paving the way for their implementation in the food, pharmaceutical, and cosmeceutical industries.","PeriodicalId":178524,"journal":{"name":"Catalysis Research","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115267182","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

Pd-Ni-B/C Nanocatalysts for Electrochemical Oxidation of Ethanol in Alkaline Media 碱性介质中乙醇电化学氧化的Pd-Ni-B/C纳米催化剂

Catalysis Research Pub Date : 2023-01-19 DOI: 10.21926/cr.2301005

J. Ribeiro, Ronaldo S. Silva, Giancarlo Richard Salazar Banda, K. Eguiluz

{"title":"Pd-Ni-B/C Nanocatalysts for Electrochemical Oxidation of Ethanol in Alkaline Media","authors":"J. Ribeiro, Ronaldo S. Silva, Giancarlo Richard Salazar Banda, K. Eguiluz","doi":"10.21926/cr.2301005","DOIUrl":"https://doi.org/10.21926/cr.2301005","url":null,"abstract":"This paper describes the synthesis of Pd0.70-Nix-By nanoparticles (x:y = 0.30:0, 0:0.30, 0.25:0.05, 0.20:0.10, 0.15:0.15, and 0.10:0.20) supported on carbon Vulcan XC-72 R by the chemical reduction method using ethylene glycol as a reducing agent for the study of the electrochemical oxidation of ethanol in alkaline media. Neither surfactants nor templates were used during the syntheses. The catalysts were physically characterized by transmission electron microscopy that showed the formation of nanoparticles with diameters of approximately 3 nm. Analyses of X-ray dispersive energy spectroscopy coupled with scanning electron microscopy identified the presence of the synthesized metals in concentrations close to the nominal ones. The electrochemical study was performed by CO-stripping, cyclic voltammetry, chronoamperometry, and steady-state polarization curves. The catalytic efficiency was also evaluated against the oxidation of CO, which is the principal intermediate adsorbed on the surface of catalysts during ethanol oxidation. The Pd0.70Ni0.15B0.15/C catalyst showed the lowest oxidation onset potentials for both CO (0.37 V) and ethanol oxidation (0.51 V) compared with the Pd/C catalyst (0.63 V and 0.64 V). Chronoamperometric tests also revealed that the Pd0.70Ni0.15B0.15/C catalyst displayed current densities four times higher than those of the Pd/C catalyst, probably because of the electronic and geometric effect that favors the removal of intermediate species from the catalyst surface. The synthesized ternary catalysts were more efficient toward the electrochemical oxidation of ethanol in alkaline media than Pd0.7Ni0.3/C and Pd/C catalysts. Thus, the synergistic effect of boron on the structure of binary nanoparticle catalysts supported on carbon for use in direct alcohol fuel cells was demonstrated for the first time.","PeriodicalId":178524,"journal":{"name":"Catalysis Research","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125031310","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