Catalyst synthesis and growth of indium nitride nanodots

2004 ◽  
Author(s):  
Z.L. Xie ◽  
Rong Zhang ◽  
Z.X. Bi ◽  
B. Liu ◽  
X.Q. Xiu ◽  
...  
Keyword(s):  
Indium Nitride ◽  
Catalyst Synthesis

Chitosan as capping agent in a robust one-pot procedure for a magnetic catalyst synthesis

2021 ◽  
pp. 118267
Author(s):  
Tomer A. Dickstein ◽  
Ergang Zhou ◽  
Kian K. Hershberger ◽  
Angela K. Haskell ◽  
David Gene Morgan ◽  
...  
Keyword(s):  
Capping Agent ◽  
One Pot ◽  
Catalyst Synthesis ◽  
Magnetic Catalyst

scholarly journals On the key role of aluminium and other heteroatoms during interzeolite conversion synthesis

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 26188-26210
Author(s):  
Julien Devos ◽  
Meera A. Shah ◽  
Michiel Dusselier
Keyword(s):  
Catalyst Synthesis ◽  
Synthesis Protocol

The crucial roles of aluminium in driving and controlling interzeolite conversion, a useful catalyst synthesis protocol, are put under scrutiny.

scholarly journals An Overview of Biodiesel Production via Calcium Oxide Based Catalysts: Current State and Perspective

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3950
Author(s):  
Hoora Mazaheri ◽  
Hwai Chyuan Ong ◽  
Zeynab Amini ◽  
Haji Hassan Masjuki ◽  
M. Mofijur ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Calcium Oxide ◽  
Heterogeneous Catalysts ◽  
Low Cost ◽  
Biodiesel Production ◽  
Catalyst Synthesis ◽  
Process Improvements ◽  
Current State ◽  
The Common ◽  
Activity Mechanism

Biodiesel is a clean, renewable, liquid fuel that can be used in existing diesel engines without modification as pure or blend. Transesterification (the primary process for biodiesel generation) via heterogeneous catalysis using low-cost waste feedstocks for catalyst synthesis improves the economics of biodiesel production. Heterogeneous catalysts are preferred for the industrial generation of biodiesel due to their robustness and low costs due to the easy separation and relatively higher reusability. Calcium oxides found in abundance in nature, e.g., in seashells and eggshells, are promising candidates for the synthesis of heterogeneous catalysts. However, process improvements are required to design productive calcium oxide-based catalysts at an industrial scale. The current work presents an overview of the biodiesel production advancements using calcium oxide-based catalysts (e.g., pure, supported, and mixed with metal oxides). The review discusses different factors involved in the synthesis of calcium oxide-based catalysts, and the effect of reaction parameters on the biodiesel yield of calcium oxide-based catalysis are studied. Further, the common reactor designs used for the heterogeneous catalysis using calcium oxide-based catalysts are explained. Moreover, the catalytic activity mechanism, challenges and prospects of the application of calcium oxide-based catalysts in biodiesel generation are discussed. The study of calcium oxide-based catalyst should continue to be evaluated for the potential of their application in the commercial sector as they remain the pivotal goal of these studies.

First principles calculations of structural, electronic and optical properties of InN compound

2015 ◽  
Vol 29 (05) ◽  
pp. 1550028 ◽  
Author(s):  
R. Graine ◽  
R. Chemam ◽  
F. Z. Gasmi ◽  
R. Nouri ◽  
H. Meradji ◽  
...  
Keyword(s):  
Optical Properties ◽  
Band Structure ◽  
Density Functional ◽  
Local Density ◽  
Indium Nitride ◽  
Alternative Form ◽  
Full Potential ◽  
Generalized Gradient ◽  
Pressure Derivative ◽  
Electronic And Optical Properties

We carried out ab initio calculations of structural, electronic and optical properties of Indium nitride ( InN ) compound in both zinc blende and wurtzite phases, using the full-potential linearized augmented plane wave method (FP-LAPW), within the framework of density functional theory (DFT). For the exchange and correlation potential, local density approximation (LDA) and generalized gradient approximation (GGA) were used. Moreover, the alternative form of GGA proposed by Engel and Vosko (EV-GGA) and modified Becke–Johnson schemes (mBJ) were also applied for band structure calculations. Ground state properties such as lattice parameter, bulk modulus and its pressure derivative are calculated. Results obtained for band structure of these compounds have been compared with experimental results as well as other first principle computations. Our results show good agreement with the available data. The calculated band structure shows a direct band gap Γ → Γ. In the optical properties section, several optical quantities are investigated; in particular we have deduced the interband transitions from the imaginary part of the dielectric function.

New apatite-based supports prepared by industrial phosphoric acid for HDS catalyst synthesis

2009 ◽  
Vol 12 (6-7) ◽  
pp. 677-682 ◽  
Author(s):  
Mohammed Achchar ◽  
Carole Lamonier ◽  
Abdelaziz Ezzamarty ◽  
Mahjoub Lakhdar ◽  
Jacques Leglise ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Catalyst Synthesis
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