scholarly journals In situ high-pressure spectroscopic studies using moissanite (4H-SiC) anvils

AIP Advances ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 095012 ◽  
Author(s):  
Jinbo Zhang ◽  
Xinli Zhao ◽  
Zhipeng Yan ◽  
Ye Yuan ◽  
Xin Li ◽  
...  
Keyword(s):  
High Pressure ◽  
Spectroscopic Studies

In-situ infrared spectroscopic studies of hydroxyl in amphiboles at high pressure

2016 ◽  
Vol 101 (3) ◽  
pp. 706-712 ◽  
Author(s):  
Elizabeth C. Thompson ◽  
Andrew J. Campbell ◽  
Zhenxian Liu
Keyword(s):  
High Pressure ◽  
Spectroscopic Studies ◽  
Infrared Spectroscopic

Hybrid Ni Al layered double hydroxide: Characterization and in situ synchrotron XRD and vibrational spectroscopic studies under high-pressure

2019 ◽  
Vol 174 ◽  
pp. 152-158 ◽  
Author(s):  
Caroline S. de Matos ◽  
Marcelo M. Nóbrega ◽  
Marcia L.A. Temperini ◽  
Vera R.L. Constantino
Keyword(s):  
High Pressure ◽  
Layered Double Hydroxide ◽  
Spectroscopic Studies ◽  
Double Hydroxide ◽  
Synchrotron Xrd

Oxidative Carbonylation of Methanol to Dimethyl Carbonate by Chlorine-Free Homogeneous and Immobilized 2,2'-Bipyrimidine Modified Copper Catalyst

2007 ◽  
Vol 72 (8) ◽  
pp. 1094-1106 ◽  
Author(s):  
Szilárd Csihony ◽  
László T. Mika ◽  
Gábor Vlád ◽  
Katalin Barta ◽  
Christian P. Mehnert ◽  
...  
Keyword(s):  
High Pressure ◽  
Dimethyl Carbonate ◽  
Copper Catalyst ◽  
Catalytic Performance ◽  
Spectroscopic Studies ◽  
Oxidative Carbonylation ◽  
Cu Catalyst

A chlorine-free catalyst, prepared in situ from Cu(II) acetate and 2,2'-bipyrimidine, can be used for the oxidative carbonylation of methanol to dimethyl carbonate. In situ high pressure IR and NMR spectroscopic studies suggest the formation of [Cu(2,2'-bipyrimidine)(CO)- (OMe)] as one of the key intermediates. The catalytic performance of the 2,2'-bipyrimidine-modified Cu-catalyst is similar to the CuCl-based system. The chlorine free catalyst can be immobilized by using the copolymer of 5-vinyl-2,2'-bipyrimidine and styrene.

Behavior of phengite at high temperature and high pressure: In situ IR and Raman spectroscopic studies

2019 ◽  
Author(s):  
WENDI Liu ◽  
Yan Yang ◽  
Zeming Qi ◽  
Zhongping Wang ◽  
Weihua Huang ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Spectroscopic Studies ◽  
Raman Spectroscopic ◽  
In Situ Ir ◽  
Ir And Raman

scholarly journals Multiferroic CuCrO2 under high pressure: In situ X-ray diffraction and Raman spectroscopic studies

2014 ◽  
Vol 116 (13) ◽  
pp. 133514 ◽  
Author(s):  
Alka B. Garg ◽  
A. K. Mishra ◽  
K. K. Pandey ◽  
Surinder M. Sharma
Keyword(s):  
High Pressure ◽  
Spectroscopic Studies ◽  
X Ray Diffraction ◽  
X Ray ◽  
Raman Spectroscopic

Single Crystal Growth of High-Pressure Phases of Ice and Salt Hydrate Far Below the Original Melting Point by Mixing Alcohol: Crystal Structure Determination of Magnesium Chloride Heptahydrate

2020 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Crystal Growth ◽  
Single Crystal ◽  
Room Temperature ◽  
Growth Technique ◽  
Salt Hydrate ◽  
X Ray

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.50 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.

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