An exceptional selectivity for partial hydrogenation on a supported nickel catalyst coated with [BMIM][BF 4 ]

Improving CO2 Separation Performance of MIL‐53(Al) by Incorporating 1‐n‐Butyl‐3‐Methylimidazolium Methyl Sulfate

“…They can be constituted of charged organic cations and organic or inorganic anions, or neutral ion pairs. Because of their tunable physicochemical properties, they have been used in various applications, including synthesis, [19][20][21] catalysis, [22][23][24] gas storage and separation. [25][26][27] Modification of MOFs with ILs can be either by the incorporation of ILs into the framework [28][29][30][31][32][33][34] or coating the external surface area of MOFs with ILs forming a core-shell-like structure.…”

The conversion of α-pinene to cis-pinane using a nickel catalyst supported on a discarded fluid catalytic cracking catalyst with an ionic liquid layer

“…Oxidization of nickel might be attributed to reactions with oxygen in the air during the sample testing, similar to previous reports. 36 The differences observed here are attributed to interactions of ionic liquid with the active metal sites. The IL may act as a ligand directly interacting with the catalytically active site.…”

“…To increase the selectivity to the product of interest, conventional monometallic catalysts are typically doped with other metals or non-metal elements to regulate the electronic environment of the active components. 32 For SCILL-based catalysts, a thin lm of ionic liquid covers the active sites of the catalyst and interacts with the active metal by controlling the electron density at the metal sites, where the degree of electron donation correlates with the interionic interactions in the ionic liquids, which in turn controls the activity and selectivity of the catalyst. Schwab et al used a supported Pd catalyst with an ionic liquid layer in the stereoselective hydrogenation of 2-hexyne to cis-2-hexene and achieved an outstanding yield of 88%.…”

“…It was possible to teach a cheap Ni-based catalyst to act like an noble Ru metal catalyst for hydrogenation reaction by coating it with an ionic liquid lm. 32 Finally the reusability of the catalyst coated with or without ionic liquid was also investigated for the hydrogenation of apinene (Fig. 6).…”

“…31 The excellent selectivity of SCILL-based catalysts can be mainly attributed to the lter effect, which regulates the effective concentration of substances at the active sites of catalysts together with the ligand effects of the ionic liquid, which change the electron density distribution of active sites and affect interactions of reactants and intermediates with active metals. 32 In this work, a SCILL catalyst for a-pinene hydrogenation with nickel, a non-noble metal, was developed in combination with the industrial waste carrier DF3C and the ionic liquid 1ethanol-3-methylimidazolium tetrauoroborate ([C 2 OHmim] [BF 4 ]), as shown in Scheme 1. The effects of temperature, pressure, ionic liquid loading on the hydrogenation of a-pinene were explored.…”