Results 1 to 10 of about 1,004,670 (249)

Revealing the Nanoscale Morphology Changes of Polymer Electrolyte Membrane Fuel Cell Catalyst Layers due to Conditioning [PDF]

Advanced Science
We applied ex situ and in situ scanning transmission X‐ray microscopy (STXM) to reveal the structural degradation of polymer electrolyte membrane (PEM) fuel cell catalyst layers due to conditioning and thermal heating of the catalyst coated membrane (CCM)
Spencer Lytle, Harsharaj B. Parmar, Jian Wang, Shohei Yamashita, Aimy Bazylak   +4 more
doaj   +2 more sources

Selective Oxidation of Cyclohexene, Toluene and Ethyl Benzene Catalyzed by Bis-(L-tyrosinato)copper(II), Immersed in a Magnetite-Infused Silica Matrix [PDF]

Nanochemistry Research, 2016
Bis-(L-tyrosinato)copper(II) was reacted with 3-(chloropropyl)-trimethoxysilane functionalized silica that has infused magnetite to yield a magnetically separable catalyst in which the copper carboxylate is covalently linked to the silica matrix through ...
Massomeh Ghorbanloo, Amene Mohamadi, Heidenori Yahiro   +2 more
doaj   +1 more source

A Review on the Recent Breakthrough Methods and Influential Parameters in the Biodiesel Synthesis and Purification

International Journal of Renewable Energy Development, 2022
Biodiesel has recently received much attention as an energy source with numerous benefits such as high degradability, negligible toxicity, and minimal emissions of carbon monoxide gases as well as particulates.
S. Silviana, Didi Dwi Anggoro, H. Hadiyanto, Cantika Aulia Salsabila, Kevin Aprilio, Anisa Widia Utami, Afriza Ni'matus Sa'adah, Febio Dalanta   +7 more
doaj   +1 more source

The Fast Formation of a Highly Active Homogeneous Catalytic System upon the Soft Leaching of Pd Species from a Heterogeneous Pd/C Precursor

Inorganics, 2023
Understanding the interface between soluble metal complexes and supported metal particles is important in order to reveal reaction mechanisms in a new generation of highly active homogeneous transition metal catalysts. In this study, we show that, in the
Alexey S. Galushko, Valentina V. Ilyushenkova, Julia V. Burykina, Ruslan R. Shaydullin, Evgeniy O. Pentsak, Valentine P. Ananikov   +5 more
doaj   +1 more source

State of the Art of Catalysts for Biodiesel Production

Frontiers in Energy Research, 2020
Biodiesel is one of the potential alternative energy sources that can be derived from renewable and low-grade origin through different processes. One of the processes is alcoholysis or transesterification in the presence of a suitable catalyst.
I. M. Rizwanul Fattah, H. C. Ong, T. M. I. Mahlia, M. Mofijur, A. S. Silitonga, S. M. Ashrafur Rahman, Arslan Ahmad   +6 more
doaj   +1 more source

Magnetically Separable Base Catalysts: Heterogeneous Catalysis vs. Quasi-Homogeneous Catalysis

Applied Sciences, 2012
The synthesis of magnetically separable quasi-homogeneous base catalyst and heterogeneous base catalyst is described. The quasi-homogeneous catalyst is achieved by supporting silane monomers functionalized with different amine groups directly on the ...
Raed Abu-Reziq, Howard Alper
doaj   +1 more source

The Influence of Comonomer on Ethylene/α-Olefin Copolymers Prepared Using [Bis(N-(3-tert butylsalicylidene)anilinato)] Titanium (IV) Dichloride Complex

Molecules, 2011
We describe the synthesis of [bis(N-(3-tert-butylsalicylidene)anilinato)] titanium (IV) dichloride (Ti-FI complex) and examine the effects of comonomer (feed concentration and type) on its catalytic performance and properties of the resulting polymers ...
Patcharaporn Kaivalchatchawal, Pattiya Suttipitakwong, Sutheerawat Samingprai, Piyasan Praserthdam, Bunjerd Jongsomjit   +4 more
doaj   +1 more source

Synthesis of Metallocene Catalyst for Terpolymerization of Ethylene, Propylene and Diene [PDF]

علوم و تکنولوژی پلیمر, 2014
The bis(indenyl) zirconium dichloride catalyst was synthesized by a modified method at room temperature. Terpolymerization of ethylene, propylene and diene monomers were carried out using this metallocene catalyst under different conditions of different ...
S.M.M. Mortazavi, S. Ahmadjo, M. Nekoomanesh, A. Arabi, Gholamhossein Zohuri   +4 more
doaj   +1 more source

Advancements of Biochar-Based Catalyst for Improved Production of Biodiesel: A Comprehensive Review

Energies, 2023
Despite being a limited and scarce resource, the necessity and exploitation of fossil fuels are unstoppable in serving human demands. In order to supply energy demand without causing environmental damage, it is crucial to utilize a variety of renewable ...
Sooraj Kumar, Suhail Ahmed Soomro, Khanji Harijan, Mohammad Aslam Uqaili, Laveet Kumar   +4 more
doaj   +1 more source

Biodiesel preparation from Camelina sativa oil by homogeneous and heterogeneous transesterification [PDF]

E3S Web of Conferences
Biodiesel is one of the possible alternatives to diesel fuel to address the issue of fossil fuels and their impact on the environment. Substituting homogeneous transesterification with heterogeneous offers advantages such as improved catalyst and product
Bérešová Miroslava, Peller András, Horňáček Michal   +2 more
doaj   +1 more source