Results 21 to 30 of about 38,938 (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

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

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

Cancer cell‐intrinsic type 1 interferon: production, signaling, and outcomes within sex‐biased, female malignancies

Molecular Oncology, EarlyView.
The cell‐autonomous roles of interferon type 1 vary based on duration and intensity. While acute, robust signaling results in cancer cell cytotoxic effects, sustained, low‐level signaling is associated with tumor‐promoting effects. This review summarizes current research of IFN‐1 in cancer and within the clinical setting, with an emphasis on female ...
Ashlyn Conant, Nora Badiner, Sharon Asariah, Kiera McGivney, Vishwa Shah, Tise Suzuki, Yevgeniya J. Ioffe, Juli J. Unternaehrer   +7 more
wiley   +1 more source

Organoplatinum (II) complexes containing bis-(N-heterocyclic carbene) ligands: Catalytic activity in hydrosilylation of α,β-unsaturated ketones [PDF]

شیمی کاربردی روز, 2018
Two N-heterocyclic carbene platinum complexes [PtMe2(NHC)], 1 and [Pt(TFA)2(NHC)], 2, in which, NHC = 1, 1′- methylene- 3, 3′- bis[(N-(tert-butyl) imidazol-2- ylidene] have been prepared and characterized using NMR spectroscopy and ESI-MASS spectrometry.
sirous jamali, Sedigheh Abedanzadeh
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source