In Situ Raman Spectroscopy Studies of the Electrolyte-Substrate Interface during Electrodeposition of Silicon in a Room-Temperature Ionic Liquid

2019 ◽  
Vol 16 (24) ◽  
pp. 1-6 ◽  
Author(s):  
Yusaku Nishimura ◽  
Yasuhiro Fukunaka ◽  
Caetano R. Miranda ◽  
Tetsuo Nishida ◽  
Toshiyuki Nohira ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Ionic Liquid ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Substrate Interface ◽  
Spectroscopy Studies

In-Situ Raman Spectroscopy Studies of Room-Temperature and Hydrothermal Reactions

2012 ◽  
Vol 1444 ◽  
Author(s):  
Brendan T. McGrail ◽  
Laurent J. Jouffret ◽  
Eric M. Villa ◽  
Peter C. Burns
Keyword(s):  
Raman Spectroscopy ◽  
Continuous Monitoring ◽  
Room Temperature ◽  
Model Systems ◽  
Optical Systems ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman ◽  
Parr Instrument Company ◽  
Spectroscopy Studies

ABSTRACTBy contracting with the Parr Instrument Company and Bruker Optical Systems, we have developed a system for continuous monitoring of hydrothermal and room temperature reactions by Raman spectroscopy. Using the uranyl peroxide cage cluster {[UO2(O2)(OH)]16[UO2(OM)2]4}24- (denoted {U20R}) and a coordination polymer made from uranyl ions and 4,4’-biphenyldicarboxylate as model systems, we demonstrate the spectroscopically observable changes associated with reaction progress and crystallization.

Room temperature ionic liquid as solvent for in situ Pd/H formation: hydrogenation of carbon–carbon double bonds

2013 ◽  
Vol 15 (4) ◽  
pp. 1188-1197 ◽  
Author(s):  
Benjamin C. M. Martindale ◽  
Dzianis Menshykau ◽  
Sven Ernst ◽  
Richard G. Compton
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Double Bonds

scholarly journals Oxidative Carbonylation of Methanol to Dimethyl Carbonate in Ionic Liquid 1-Butyl-3-Methylimidazolium Hexafluorophosphate

2003 ◽  
Vol 2003 (9) ◽  
pp. 549-551 ◽  
Author(s):  
Tao Jiang ◽  
Buxing Han ◽  
Guoying Zhao ◽  
Yanhong Chang ◽  
Liang Gao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquid ◽  
Supercritical Carbon Dioxide ◽  
Room Temperature ◽  
Dimethyl Carbonate ◽  
Room Temperature Ionic Liquid ◽  
Oxidative Carbonylation ◽  
Enhanced Selectivity ◽  
Supercritical Carbon

The synthesis of dimethyl carbonate (DMC) by oxidative carbonylation of methanol with PdCl2 as a catalyst was investigated in the room temperature ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]). The products were recovered in situ using supercritical carbon dioxide. Enhanced selectivity of DMC over this catalyst was observed in the synthesis in [bmim][PF6] compared with the situation without the ionic liquid (IL). The mixture of catalyst and [bmim][PF6] could be recycled.

scholarly journals The Electrochemical Behaviour of Quaternary Amine-Based Room-Temperature Ionic Liquid N4111(TFSI)

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1315
Author(s):  
Jaanus Kruusma ◽  
Arvo Tõnisoo ◽  
Rainer Pärna ◽  
Thomas Thomberg ◽  
Mati Kook ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Electrochemical Impedance ◽  
Electrochemical Behaviour ◽  
Room Temperature Ionic Liquid ◽  
Potential Range ◽  
Quaternary Amine ◽  
Xps Spectra ◽  
Strong Adsorption

In this study, we used the in situ X-ray photoelectron spectroscopy (XPS), in situ mass spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy methods, for the first time, in a detailed exploration of the electrochemical behaviour of a quaternary amine cation-based room-temperature ionic liquid, butyl-trimethyl-ammonium bis(trifluoromethylsulfonyl)imide (N4111(TFSI)), at the negatively and positively polarised molybdenum carbide-derived micro-mesoporous carbon (mmp-C(Mo2C)) electrodes that can be used as high surface area supporting material for electrocatalysts. The shapes of the C 1s, N 1s, O 1s, F 1s and S 2p XPS spectra were stable for N4111(TFSI) within a very wide potential range. The XPS data indicated the non-specific adsorption character of the cations and anions in the potential range from −2.00 V to 0.00 V. Thus, this region can be used for the detailed analysis of catalytic reaction mechanisms. We observed strong adsorption from 0.00 V to 1.80 V, and at E > 1.80 V, very strong adsorption of the N4111(TFSI) at the mmp-C(Mo2C) took place. At more negative potentials than −2.00 V, the formation of a surface layer containing both N4111+ cations and TFSI− anions was established with the formation of various gaseous compounds. Collected data indicated the electrochemical instability of the N4111+ cation at E < −2.00 V.

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