151
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Zaitsau DH, Yermalayeu AV, Emel'yanenko VN, Schick C, Verevkin SP, Samarov AA, Schlenk S, Wasserscheid P. Structure-Property Relations in Ionic Liquids: 1,2,3-Trimethyl-imidazolium and 1,2,3-Trimethyl-benzimidazolium bis-(trifluorsulfonyl)imide. ACTA ACUST UNITED AC 2012. [DOI: 10.1524/zpch.2013.0312] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Vaporization enthalpies for a pairs of the ionic liquids (ILs) 1,2,3-trimethyl-imidazolium and 1,2,3-trimethyl-benzimidazolium bistrifluorsulfonylimide and the corresponding molecular liquids 1,2-dimethyl-imidazole and 1,2-dimethyl-benzimidazole were determined using a quartz crystal microbalance method and TGA (for ILs) and the transpiration method (for molecular compounds). Differences in vaporization enthalpies in molecular and ionic liquids are discussed in context of structure-property relations.
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152
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Werner S, Szesni N, Kaiser M, Haumann M, Wasserscheid P. A Scalable Preparation Method for SILP and SCILL Ionic Liquid Thin-Film Materials. Chem Eng Technol 2012. [DOI: 10.1002/ceat.201200210] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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153
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Pitsch F, Krull FF, Agel F, Schulz P, Wasserscheid P, Melin T, Wessling M. An adaptive self-healing ionic liquid nanocomposite membrane for olefin-paraffin separations. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:4306-4310. [PMID: 22718429 DOI: 10.1002/adma.201201832] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Indexed: 06/01/2023]
Abstract
An adaptive self-healing ionic liquid nanocomposite membrane comprising a multi-layer support structure hosting the ionic salt [Ag](+) [Tf(2) N](-) is used for the separation of the olefin propylene and the paraffin propane. The ionic salt renders liquid like upon complexation with propylene, resulting in facilitated transport of propylene over propane at benchmark-setting selectivity and permeance levels. The contacting with acetylene causes the ionic salt to liquefy without showing evidence of forming explosive silver acetylide.
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154
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Arlt W, Wasserscheid P. Energieversorgung über flüssige Wasserstoffträger. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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155
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Werner S, Szesni N, Kaiser M, Haumann M, Wasserscheid P. A Scalable Preparation Method for SILP and SCILL Ionic Liquid Thin Film Materials: Fluidized Bed Coating. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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156
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Stark K, Westerholt A, Wasserscheid P, Arlt W. Trennung komplexer Mischungen von partiell hydrierten organischen Verbindungen und ihrer Isomere durch Destillation. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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157
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Sobota M, Schernich S, Schulz H, Hieringer W, Paape N, Wasserscheid P, Görling A, Laurin M, Libuda J. Preparation and characterization of ultrathin [Ru(CO)3Cl2]2 and [BMIM][Tf2N] films on Al2O3/NiAl(110) under UHV conditions. Phys Chem Chem Phys 2012; 14:10603-12. [PMID: 22760015 DOI: 10.1039/c2cp40697g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Towards a better understanding of the interface chemistry of ionic liquid (IL) thin film catalytic systems we have applied a rigorous surface science model approach. For the first time, a model homogeneous catalyst has been prepared under ultrahigh vacuum conditions. The catalyst, di-μ-chlorobis(chlorotricarbonylruthenium) [Ru(CO)(3)Cl(2)](2), and the solvent, the IL 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [BMIM][Tf(2)N], have been deposited by physical vapor deposition onto an alumina model support [Al(2)O(3)/NiAl(110)]. First, the interaction between thin films of [Ru(CO)(3)Cl(2)](2) and the support is investigated. Then, the ruthenium complex is co-deposited with the IL and the influence of the solvent on the catalyst is discussed. D(2)O, which is a model reactant, is further added. Growth, surface interactions, and mutual interactions in the thin films are studied with IRAS in combination with density functional (DFT) calculations. At 105 K, molecular adsorption of [Ru(CO)(3)Cl(2)](2) is observed on Al(2)O(3)/NiAl(110). The IRAS spectra of the binary [Ru(CO)(3)Cl(2)](2) + [BMIM][Tf(2)N] and ternary [Ru(CO)(3)Cl(2)](2) + [BMIM][Tf(2)N] + D(2)O show every characteristic band of the individual components. Above 223 K, partial decomposition of the ruthenium complex leads to species of molecular nature attributed to Ru(CO) and Ru(CO)(2) surface species. Formation of metallic ruthenium clusters occurs above 300 K and the model catalyst decomposes further at higher temperatures. Neither the presence of the IL nor of D(2)O prevents this partial decomposition of [Ru(CO)(3)Cl(2)](2) on alumina.
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158
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Taccardi N, Niedermaier I, Maier F, Steinrück H, Wasserscheid P. Cyclic Thiouronium Ionic Liquids: Physicochemical Properties and their Electronic Structure Probed by X‐Ray Induced Photoelectron Spectroscopy. Chemistry 2012; 18:8288-91. [DOI: 10.1002/chem.201200971] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Indexed: 11/06/2022]
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159
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Kiefer J, Cöngevel MA, Roth D, Obert K, Wasserscheid P, Leipertz A. Attenuated total reflection infrared difference spectroscopy (ATR-IRDS) for quantitative reaction monitoring. APPLIED SPECTROSCOPY 2012; 66:685-688. [PMID: 22732540 DOI: 10.1366/11-06472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Monitoring of chemical reactors is key to optimizing yield and efficiency of chemical transformation processes. Aside from tracking pressure and temperature, the measurement of the chemical composition is essential in this context. We present an infrared difference spectroscopy approach for determining the reactant (cyclooctene) and product (cyclooctane) concentrations during a catalytic hydrogenation reaction in the solvent cyclohexane, which is present in large excess. Subtracting the spectrum of the pure solvent from the reactor mixture spectra yields infrared (IR) spectra, which can ultimately be evaluated using a curve-fitting procedure based on spectral soft modeling. An important feature of our evaluation approach is that the calibration only requires recording the pure component spectra of the reactants, products, and solvent. Hence, no time-consuming preparation of mixtures for calibration is necessary. The IR concentration results are in good agreement with gas chromatography measurements.
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160
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Niedermaier I, Kolbeck C, Taccardi N, Schulz PS, Li J, Drewello T, Wasserscheid P, Steinrück HP, Maier F. Inside Cover: Organic Reactions in Ionic Liquids Studied by in Situ XPS (ChemPhysChem 7/2012). Chemphyschem 2012. [DOI: 10.1002/cphc.201290030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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161
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Kolbeck C, Niedermaier I, Taccardi N, Schulz PS, Maier F, Wasserscheid P, Steinrück HP. Inside Back Cover: Monitoring of Liquid-Phase Organic Reactions by Photoelectron Spectroscopy (Angew. Chem. Int. Ed. 11/2012). Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201108841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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162
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Niedermaier I, Kolbeck C, Taccardi N, Schulz PS, Li J, Drewello T, Wasserscheid P, Steinrück HP, Maier F. Organic Reactions in Ionic Liquids Studied by in Situ XPS. Chemphyschem 2012; 13:1725-35. [DOI: 10.1002/cphc.201100965] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Indexed: 11/05/2022]
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163
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Cubillas AM, Schmidt M, Scharrer M, Euser TG, Etzold BJM, Taccardi N, Wasserscheid P, Russell PSJ. Ultra-Low Concentration Monitoring of Catalytic Reactions in Photonic Crystal Fiber. Chemistry 2012; 18:1586-90. [DOI: 10.1002/chem.201102424] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Indexed: 11/11/2022]
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164
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Wang X, Sobota M, Kohler FTU, Morain B, Melcher BU, Laurin M, Wasserscheid P, Libuda J, Meyer K. Functional nickel complexes of N-heterocyclic carbeneligands in pre-organized and supported thin film materials. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm13416g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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165
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Bajus S, Deyko A, Bösmann A, Maier F, Steinrück HP, Wasserscheid P. Low melting Li/K/Cs acetate salt mixtures as new ionic media for catalytic applications – first physico-chemical characterization. Dalton Trans 2012; 41:14433-8. [DOI: 10.1039/c2dt31568h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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166
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Li J, Wei W, Nye LC, Schulz PS, Wasserscheid P, Ivanović-Burmazović I, Drewello T. Zwitterionic clusters with dianion core produced by electrospray ionisation of Brønsted acidic ionic liquids. Phys Chem Chem Phys 2012; 14:5115-21. [DOI: 10.1039/c2cp24071h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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167
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Kolbeck C, Niedermaier I, Taccardi N, Schulz PS, Maier F, Wasserscheid P, Steinrück HP. Innenrücktitelbild: Monitoring of Liquid-Phase Organic Reactions by Photoelectron Spectroscopy (Angew. Chem. 11/2012). Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201108841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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168
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Kolbeck C, Niedermaier I, Taccardi N, Schulz PS, Maier F, Wasserscheid P, Steinrück HP. Monitoring of Liquid-Phase Organic Reactions by Photoelectron Spectroscopy. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201107402] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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169
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Kolbeck C, Niedermaier I, Taccardi N, Schulz PS, Maier F, Wasserscheid P, Steinrück HP. Monitoring of Liquid-Phase Organic Reactions by Photoelectron Spectroscopy. Angew Chem Int Ed Engl 2011; 51:2610-3. [DOI: 10.1002/anie.201107402] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Indexed: 11/08/2022]
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170
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Kohler FTU, Morain B, Weiß A, Laurin M, Libuda J, Wagner V, Melcher BU, Wang X, Meyer K, Wasserscheid P. Inside Cover: Surface-Functionalized Ionic Liquid Crystal-Supported Ionic Liquid Phase Materials: Ionic Liquid Crystals in Mesopores (ChemPhysChem 18/2011). Chemphyschem 2011. [DOI: 10.1002/cphc.201190091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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171
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Kohler FTU, Morain B, Weiß A, Laurin M, Libuda J, Wagner V, Melcher BU, Wang X, Meyer K, Wasserscheid P. Surface-Functionalized Ionic Liquid Crystal-Supported Ionic Liquid Phase Materials: Ionic Liquid Crystals in Mesopores. Chemphyschem 2011; 12:3539-46. [DOI: 10.1002/cphc.201100379] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2011] [Revised: 09/23/2011] [Indexed: 11/10/2022]
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172
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Scholz J, Loekman S, Szesni N, Hieringer W, Görling A, Haumann M, Wasserscheid P. Ethene-Induced Temporary Inhibition of Grubbs Metathesis Catalysts. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100509] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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173
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Haumann M, Jakuttis M, Franke R, Schönweiz A, Wasserscheid P. Continuous Gas-Phase Hydroformylation of a Highly Diluted Technical C4 Feed using Supported Ionic Liquid Phase Catalysts. ChemCatChem 2011. [DOI: 10.1002/cctc.201100117] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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174
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Sachnov SJ, Schulz PS, Wasserscheid P. A convenient method to access long-chain and functionalised mixed methylphosphonate esters and their application in the synthesis of ionic liquids. Chem Commun (Camb) 2011; 47:11234-6. [PMID: 21927764 DOI: 10.1039/c1cc14490a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new method to synthesise long-chain and functionalised methylphosphonate esters and the corresponding ionic liquids is reported. The synthesis comprises the formation of dialkyl methylphosphonate esters in a S(N)2 reaction followed by the use of these esters as alkylating agents to form the corresponding, new alkyl methylphosphonate ILs.
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175
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Jess A, Leitner W, Wasserscheid P. Bessere Lösungen dank „Advanced Fluids”. CHEM-ING-TECH 2011. [DOI: 10.1002/cite.201190070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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