Results 21 to 30 of about 38,643 (267)

Comparison of homogeneous and heterogeneous catalysis for synthesis of biodiesel from Madhuca indica oil [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2011
Biodiesel was developed by transesterification of Madhuca indica oil by homogeneous and heterogeneous catalysis. KOH and CaO were taken as homogeneous and heterogeneous catalysts, respectively.
B. SINGH, FAIZAL BUX, Y.C. SHARMA
doaj  

Effect of substrate and catalyst chirality on the diastereoselective epoxidation of R-(+)-limonene with manganese(III) salen complexes

Revista Facultad de Ingeniería Universidad de Antioquia, 2013
The asymmetric epoxidation of R-(+)-limonene in the presence of the Jacobsen´s catalyst in its chiral and achiral either homogeneous or heterogeneous (immobilized on Al-MCM-41) forms was studied using in situ generated dimethyldioxirane as oxidizing ...
Juliana Reyes , Jairo Antonio Cubillos, Aída Luz Villa , Consuelo Montes de Correa   +3 more
doaj   +1 more source

Improving heterogeneous catalysis for biodiesel production process

Cleaner Chemical Engineering, 2022
The relevance of heterogeneous catalysis in biodiesel production cannot be overemphasized, as heterogeneous catalysts have eliminated the demerits associated with a homogeneous catalysts.
Onukwuli Dominic Okechukwu, Ezeugo Joseph, Ude Callistus Nonso, Nwosu-Obieogu Kenechi   +3 more
doaj   +1 more source

Performance of homogeneous catalysts viewed in dynamics

Chemical Communications, 2023
In this feature article, we discuss how the different aspects of the complex catalytic mechanisms manifest themselves in the commonly accepted performance metrics.
Wenjun Yang, Georgy A. Filonenko, Evgeny A. Pidko   +2 more
openaire   +4 more sources

A NEW HOMOGENEOUS ELECTROCATALYST FOR ELECTROCHEMICAL CARBONYLATION OF METHANOL TO DIMETHYL CARBONATE

Química Nova, 2015
Electrosynthesis of dimethyl carbonate (DMC) from methanol and carbon monoxide using an Cu(phen)Cl2 catalyst was achieved at room temperature and atmospheric pressure.
Xiaoyan Wang, Gan Jia, Yuting Yu, Yanfang Gao, Wen Zhang, Hong Wang, Zhenzhu Cao, Jinrong Liu   +7 more
doaj   +1 more source

Hydrothermal Synthesis of Siderite and Application as Catalyst in the Electro-Fenton Oxidation of p-Benzoquinone

Molecules, 2022
A weak aspect of the electro-Fenton (EF) oxidation of contaminants is the dependence of the Fenton reaction on acidic pH values. Therefore, the rationale of this work was to develop a novel catalyst capable of promoting the EF oxidation process at near ...
Özkan Görmez, Barış Saçlı, Uğur Çağlayan, Dimitrios Kalderis, Belgin Gözmen   +4 more
doaj   +1 more source

Genetic Algorithms for the Discovery of Homogeneous Catalysts

CHIMIA, 2023
In this account, we discuss the use of genetic algorithms in the inverse design process of homogeneous catalysts for chemical transformations. We describe the main components of evolutionary experiments, specifically the nature of the fitness function to optimize, the library of molecular fragments from which potential catalysts are assembled, and the ...
Gallarati, Simone, Van Gerwen, Puck, Schoepfer, Alexandre A., Laplaza, Ruben, Corminboeuf, Clemence   +4 more
openaire   +3 more sources

Conversion of Glucose to 5-Hydroxymethylfurfural in a Microreactor

Frontiers in Chemistry, 2020
5-hydroxymethylfurfural (5-HMF) is one of the key bio-based platform chemicals for the production of high-value chemicals and fuels. The conventional production of 5-HMF from biomass is confronted by the relatively low yield and high production cost.
Tiprawee Tongtummachat, Nattee Akkarawatkhoosith, Amaraporn Kaewchada, Attasak Jaree   +3 more
doaj   +1 more source

Green synthesis of 3,4-dihydropyrimidinones using nano Fe3O4@meglumine sulfonic acid as a new efficient solid acid catalyst under microwave irradiation

Journal of Saudi Chemical Society, 2018
Design, synthesis and characterization of nano Fe3O4@meglumine sulfonic acid as a new solid acid catalyst for the simple and green one pot multicomponent synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones was studied.
Leila Moradi, Maryam Tadayon
doaj   +1 more source

On the Homogeneity of a Cobalt-Based Water Oxidation Catalyst

ACS Catalysis, 2022
The homogeneity of molecular Co-based water oxidation catalysts (WOCs) has been a subject of debate over the last 10 years as assumed various homogeneous Co-based WOCs were found to actually form CoO x under operating conditions. The homogeneity of the Co(HL) (HL = N,N-bis(2,2'-bipyrid-6-yl)amine) system was investigated with cyclic voltammetry ...
Daan den Boer, Quentin Siberie, Maxime A. Siegler, Thimo H. Ferber, Dominik C. Moritz, Jan P. Hofmann, Dennis G. H. Hetterscheid   +6 more
openaire   +3 more sources