Mechanochemistry – a new powerful green approach to the direct synthesis of alkoxysilanes

2018 ◽  
Vol 20 (9) ◽  
pp. 1962-1969 ◽  
Author(s):  
Maxim N. Temnikov ◽  
Anton A. Anisimov ◽  
Pavel V. Zhemchugov ◽  
Dmitry N. Kholodkov ◽  
Alexander S. Goloveshkin ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Mechanochemical Method ◽  
One Stage ◽  
Green Approach

The present work shows a new one-stage mechanochemical method for the direct synthesis of alkoxysilanes.

scholarly journals Direct Synthesis of (K0.5Na0.5)NbO3Powders by Mechanochemical Method

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Nguyen Duc Van
Keyword(s):  
Milling Time ◽  
Direct Synthesis ◽  
Weight Ratio ◽  
Intermediate Species ◽  
X Ray Diffraction ◽  
Mechanochemical Method ◽  
X Ray ◽  
Milling Parameters ◽  
First Time ◽  
Carbonato Complex

The synthesis and structural properties of lead-free piezoelectric (K0.5Na0.5)NbO3powders prepared by mechanochemical method using Nb2O5, K2CO3, and Na2CO3as starting materials were reported. X-ray diffraction, infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy were used to characterize the prepared samples. Results showed that, for the first time, by selecting the milling speed of 600 rpm and the ball-to-powder weight ratio of 35 : 1 as milling parameters, pure (K0.5Na0.5)NbO3crystalline phase was obtained directly in the as-milled samples after 5 h of milling time. The existence of a carbonato complex betweenCO32−and Nb5+ions as an intermediate species of the formation of (K0.5Na0.5)NbO3was also found.

Direct synthesis of barium titanium oxyhydride for use as a hydrogen-permeable electrode

2021 ◽  
Author(s):  
Tasuku Uchimura ◽  
Fumitaka Takeiri ◽  
Kei Okamoto ◽  
Takashi Saito ◽  
Takashi Kamiyama ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Polycrystalline Sample ◽  
Functional Material ◽  
Mechanochemical Method ◽  
Mixed Conduction ◽  
Permeable Electrode ◽  
Barium Titanium

Barium titanium oxyhydride BaTiO3–xHx is a promising functional material that exhibits H–/e– mixed conduction. Here we firstly report a direct synthesis of BaTiO3–xHx by mechanochemical method. The prepared polycrystalline sample...

scholarly journals Direct Synthesis of Propylene from Ethylene: catalysts and process es

2019 ◽  
Vol 62 (1-2) ◽  
pp. 110-116
Author(s):  
E.A . Buluchevskiy ◽  
T.R . Karpova ◽  
L.F. Sayfulina ◽  
A.V. Lavrenov
Keyword(s):  
Molecular Sieves ◽  
Heterogeneous Catalysts ◽  
Direct Synthesis ◽  
Mesoporous Molecular Sieves ◽  
One Stage ◽  
The One ◽  
Nickel Tungsten

Promising technologies for a one-stage production of propylene from ethylene were considered. The basic types of catalysis systems used as heterogeneous catalysts for the one-stage production of propylene from ethylene were presented. These are zeolites, silicoaluminophosphates, mesoporous molecular sieves, nickel-, tungsten-, molybdenum- and rhenium-containing catalysts.

The vicinal functionalization of olefins: a facile route to the direct synthesis of β-chlorohydrins and β-chloroethers

RSC Advances ◽  
2014 ◽  
Vol 4 (50) ◽  
pp. 26288-26294 ◽  
Author(s):  
Peraka Swamy ◽  
Macharla Arun Kumar ◽  
Marri Mahender Reddy ◽  
Mameda Naresh ◽  
Kodumuri Srujana ◽  
...  
Keyword(s):  
Stereoselective Synthesis ◽  
Direct Synthesis ◽  
Green Approach ◽  
Chloro Derivatives ◽  
Facile Route

A general and green approach for the highly regio- and stereoselective synthesis of α-hydroxy-β-chloro and α-methoxy-β-chloro derivatives from olefins using inexpensive and industrially acceptable reagents is reported.

Direct synthesis and growth mechanism of metal molybdate (AMoO 4 ; A = Ca and Ba) fine particles via the mechanochemical method

2017 ◽  
Vol 43 ◽  
pp. S435-S443 ◽  
Author(s):  
Wanwisa Janbua ◽  
Theerachai Bongkarn ◽  
Wanwilai Vittayakorn ◽  
Naratip Vittayakorn
Keyword(s):  
Growth Mechanism ◽  
Fine Particles ◽  
Direct Synthesis ◽  
Mechanochemical Method ◽  
Metal Molybdate
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