[DE] VERFAHREN ZUR HERSTELLUNG VON ONIUM-SALZEN MIT GERINGEM CHLORID-GEHALT [EN] METHOD FOR PRODUCING ONIUM SALTS WITH A LOW CHLORIDE CONTENT [FR] PROCEDE POUR PRODUIRE DES SELS D'ONIUM A FAIBLE TENEUR EN CHLORURE
Highly efficient hydrosilylation catalysts based on chloroplatinate “ionic liquids”
作者:Magdalena Jankowska-Wajda、Olga Bartlewicz、Anna Walczak、Artur R. Stefankiewicz、Hieronim Maciejewski
DOI:10.1016/j.jcat.2019.05.005
日期:2019.6
The reactionbetween ionic liquid [Cat]+Cl− (where Cat stands for 1-butyl-3-methylimidazolium, 1-butyl-2,3-dimethylimidazolium or 1-butyl-4-methylpyridinium) and the metal precursor ([PtCl2(cod)], PtCl4, K2[PtCl4] or K2[PtCl6]) yielded two groups of derivatives: [Cat]+[PtCl4]− and [Cat]+[PtCl6]−, which formally are counted among halometallate ionic liquids, however, due to their high melting points
New anionic rhodium(III) complexes, obtained by a simple reaction of RhCl3 with organic chlorides (derivatives of imidazole and pyridine), have been employed as catalysts for hydrosilylation (reduction) of acetophenone derivatives. The reactions, in which 1,1,1,3,5,5,5-heptamethyltrisiloxane was a reducing agent, proceeded in a biphasic system because the above complexes are insoluble in the reaction
[EN] BIOMASS HYDROLYSIS<br/>[FR] HYDROLYSE DE BIOMASSE
申请人:WISCONSIN ALUMNI RES FOUND
公开号:WO2011002660A1
公开(公告)日:2011-01-06
High-yielding method for chemical hydrolysis of lignocellulose into monosaccharides. The process of the invention can additionally be applied to cellulose, xylan and related biomass polysaccharides, such as galactan, mannan, or arabinan. The method is employed for hydrolysis of a biomass polysaccharide substrate. The process is carried out in an ionic liquid in which cellulose is soluble in the presence of catalytic acid at a temperature sufficiently high to initiate hydrolysis. Water is added to the reaction mixture after initiation of hydrolysis at a rate controlled to avoid precipitation yet avoid undesired sugar dehydration products such ad HMF. Hydrolysis product is useful as feedstock for fermentations including fermentation processes for ethanol, butanol and other fuels.
CATALYTIC CONVERSION OF CELLULOSE TO FUELS AND CHEMICALS USING BORONIC ACIDS
申请人:Raines Ronald
公开号:US20130178617A1
公开(公告)日:2013-07-11
Methods and catalyst compositions for formation of furans from carbohydrates. A carbohydrate substrate is heating in the presence of a 2-substituted phenylboronic acid (or salt or hydrate thereof) and optionally a magnesium or calcium halide salt. The reaction is carried out in a polar aprotic solvent other than an ionic liquid, an ionic liquid or a mixture thereof. Additional of a selected amount of water to the reaction can enhance the yield of furans.
[EN] CHEMICAL TRANSFORMATION OF LIGNOCELLULOSIC BIOMASS INTO FUELS AND CHEMICALS<br/>[FR] TRANSFORMATION CHIMIQUE DE BIOMASSE LIGNOCELLULOSIQUE EN COMBUSTIBLES ET PRODUITS CHIMIQUES
申请人:WISCONSIN ALUMNI RES FOUND
公开号:WO2009155297A1
公开(公告)日:2009-12-23
A method for converting a carbohydrate to a furan in a polar aprotic solvent in the presence of a chloride, bromide, or iodide salt or a mixture thereof and optionally in the presence of an acid catalyst, a metal halide catalyst and/or an ionic liquid (up to 40 wt%). The method can be employed in particular to produce furfural or 5- hydroxymethylfurfural.