Synthesis and characterization of chromium silicate catalyst and its application in the gas phase glycerol transformation into acetaldehyde

O-(Dichlorosilyl)-N,N-dimethylhydroxylamine, Cl2HSiONMe2, was synthesised by the reaction of O-lithio-N,N-dimethylhydroxylamine with an excess of trichlorosilane. The compound was characterised by multinuclear NMR spectroscopy (1H, 13C, 15N, 29Si), gas-phase IR spectroscopy and mass spectrometry. The structure of Cl2HSiONMe2 was determined by gas-phase electron diffraction. It exists as two conformers in the vapour, named anti and gauche after the position of the SiH hydrogen atom relative to the SiON skeleton. The anti:gauche ratio in the vapour was determined to be 40:60. The anti conformer shows only a weak attractive interaction between the geminal donor and acceptor centres N and Si [angle Si-O-N 111.1(20)°], whereas these interactions are stronger in the gauche conformer [angle Si-O-N 98.8(12)°]. Further structure-determining forces from weak hydrogen bridges of the Si-Cl ···H-C type and van der Waals repulsive forces are also discussed. The experimental results are in reasonable agreement with ab initio calculations at the MP2/6-311++G** level of theory.

Download Full-text

Oxidation Studies of Dipositive Actinide Ions, An2+(An = Th, U, Np, Pu, Am) in the Gas Phase: Synthesis and Characterization of the Isolated Uranyl, Neptunyl, and Plutonyl Ions UO22+(g), NpO22+(g), and PuO22+(g)

The Journal of Physical Chemistry A ◽

10.1021/jp0447340 ◽

2005 ◽

Vol 109 (12) ◽

pp. 2768-2781 ◽

Cited By ~ 70

Author(s):

John K. Gibson ◽

Richard G. Haire ◽

Marta Santos ◽

Joaquim Marçalo ◽

António Pires de Matos

Keyword(s):

Gas Phase ◽

Synthesis And Characterization ◽

Phase Synthesis ◽

Gas Phase Synthesis ◽

Actinide Ions

Download Full-text

Synthesis and Characterization of Nano Titania Powder with High Photoactivity for Gas-Phase Photo-oxidation of Benzene from TiOCl2Aqueous Solution at Low Temperatures

Langmuir ◽

10.1021/la0489716 ◽

2004 ◽

Vol 20 (25) ◽

pp. 10838-10844 ◽

Cited By ~ 81

Author(s):

Yuanzhi Li ◽

Nam-Hee Lee ◽

Doo-Sun Hwang ◽

Jae Sung Song ◽

Eun Gu Lee ◽

...

Keyword(s):

Gas Phase ◽

Low Temperatures ◽

Synthesis And Characterization ◽

Photo Oxidation ◽

Titania Powder ◽

Oxidation Of Benzene

Download Full-text

Synthesis and characterization of nanosized titanium particles by gas-phase combustion

Materials Science and Engineering A ◽

10.1016/j.msea.2003.10.111 ◽

2004 ◽

Vol 375-377 ◽

pp. 609-614 ◽

Cited By ~ 2

Author(s):

Duck-Young Maeng ◽

Chang-Kyu Rhee ◽

Kyeong-Ho Kim ◽

Whung-Whoe Kim

Keyword(s):

Gas Phase ◽

Synthesis And Characterization

Download Full-text

Gas-Phase Reactions of Molecular Oxygen with Uranyl(V) Anionic Complexes—Synthesis and Characterization of New Superoxides of Uranyl(VI)

The Journal of Physical Chemistry A ◽

10.1021/acs.jpca.5b01445 ◽

2015 ◽

Vol 119 (15) ◽

pp. 3628-3635 ◽

Cited By ~ 14

Author(s):

Ana F. Lucena ◽

José M. Carretas ◽

Joaquim Marçalo ◽

Maria C. Michelini ◽

Yu Gong ◽

...

Keyword(s):

Gas Phase ◽

Molecular Oxygen ◽

Synthesis And Characterization ◽

Gas Phase Reactions ◽

Anionic Complexes

Download Full-text

Synthesis and Characterization of Hollow Core-Shell ZrO2@void@BiVO4 Visible-Light Photocatalyst

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.148-149.1331 ◽

2010 ◽

Vol 148-149 ◽

pp. 1331-1338

Author(s):

Bing Hua Yao ◽

Liu Min ◽

Zhan Ying Ma ◽

Cheng Wang

Keyword(s):

Photocatalytic Activity ◽

Gas Phase ◽

Carbon Layer ◽

Synthesis And Characterization ◽

Core Shell ◽

Hollow Core ◽

Void Space ◽

Visible Light Photocatalyst ◽

Pure Phase

Monoclinic scheelite BiVO4 was synthesized from a mixture of aqueous Bi(NO3)3 and NH4VO3 solutions by hydrothermal method. Then using successive coating of BiVO4 with a carbon layer and a ZrO2 layer followed by heat treatment to remove the carbon layer prepared a core-shell(ZrO2@void@BiVO4) nanoparticles with a void layer between the BiVO4 core and the ZrO2 shell. TG-DTA and IR suggest that BiVO4 was coated with ZrO2. TEM shows that there was a void space between the BiVO4 core and the ZrO2 shell. The samples were characterized by XRD and the peaks of ZrO2@void@BiVO4 suits well with the pure phase monoclinic scheelite BiVO4. And its visble-light photocatalytic activity was evaluated by the photodegradation of methylene blue(MB). The results indicated that the photocatalytic activity of ZrO2@void@BiVO4 is similar to that of pure phase BiVO4, which makes it can be used for preparing liquid-gas phase boundary visble-light photocatalyst.

Download Full-text