In Situ Crystallization of Ionic Liquid [Emim][PF6] from Methanol Solution under High Pressure

2014 ◽  
Vol 118 (29) ◽  
pp. 8684-8690 ◽  
Author(s):  
Haining Li ◽  
Lei Su ◽  
Xiang Zhu ◽  
Xuerui Cheng ◽  
Kun Yang ◽  
...  
Keyword(s):  
High Pressure ◽  
Ionic Liquid ◽  
Methanol Solution ◽  
In Situ Crystallization

In Situ Crystallization of Low-Melting Ionic Liquid [BMIM][PF6] under High Pressure up to 2 GPa

2010 ◽  
Vol 114 (15) ◽  
pp. 5061-5065 ◽  
Author(s):  
Lei Su ◽  
Min Li ◽  
Xiang Zhu ◽  
Zheng Wang ◽  
Zhenping Chen ◽  
...  
Keyword(s):  
High Pressure ◽  
Ionic Liquid ◽  
In Situ Crystallization

Immobilization of a rhodium catalyst using a diphosphine-functionalized ionic liquid in RTIL for the efficient and recyclable biphasic hydroformylation of 1-octene

2016 ◽  
Vol 190 ◽  
pp. 219-230 ◽  
Author(s):  
Yong-Qi Li ◽  
Huan Liu ◽  
Peng Wang ◽  
Da Yang ◽  
Xiao-Li Zhao ◽  
...  
Keyword(s):  
High Pressure ◽  
Ionic Liquid ◽  
Spectral Analysis ◽  
Catalytic System ◽  
Active Species ◽  
Rhodium Catalyst ◽  
Functionalized Ionic Liquid ◽  
Ft Ir

A highly efficient and stable Rh–P catalytic system in the RTIL of [PEmim]BF4 was developed for the biphasic hydroformylation of 1-octene by using the diphosphine-functionalized ionic liquid (FIL) of 2. While 2-Rh(acac)(CO)2 was immobilized in [PEmim]BF4 (solvent), a typical biphasic catalysis was fulfilled with advantages of facile separation and recycling ability – 9 runs without any loss of activity. It was found that not only the acquired π-acceptor character of 2, but also the synergetic role of the piperidyl group in [PEmim]BF4 as an N-containing donor, cooperatively contributed to the efficient hydroformylation due to the facilitated formation and stability of the Rh-H active species (ν 2045 cm−1). This was supported by the in situ high-pressure FT-IR spectral analysis.

High-pressure in-situ crystallization, structure and phase transitions in 1,2-dichloroethane

2004 ◽  
Vol 219 (9) ◽  
Author(s):  
Maciej Bujak ◽  
Armand Budzianowski ◽  
Andrzej Katrusiak
Keyword(s):  
High Pressure ◽  
Phase Transitions ◽  
Single Crystal ◽  
In Situ Crystallization ◽  
Crystallization Structure

AbstractThe single crystal of 1,2-dichloroethane, C

In Situ Observation of Multiple Phase Transitions in Low-Melting Ionic Liquid [BMIM][BF4] under High Pressure up to 30 GPa

2012 ◽  
Vol 116 (7) ◽  
pp. 2216-2222 ◽  
Author(s):  
Lei Su ◽  
Xiang Zhu ◽  
Zheng Wang ◽  
Xuerui Cheng ◽  
Yongqiang Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Ionic Liquid ◽  
Phase Transitions ◽  
In Situ Observation ◽  
Multiple Phase

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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