4218-48-8Relevant articles and documents
Hall,Lipsky
, p. 1242 (1971)
Hydrodeoxygenation Using Magnetic Induction: High-Temperature Heterogeneous Catalysis in Solution
Asensio, Juan M.,Miguel, Ana B.,Fazzini, Pier-Francesco,van Leeuwen, Piet W. N. M.,Chaudret, Bruno
supporting information, p. 11306 - 11310 (2019/07/12)
Magnetic heating has recently been demonstrated as an efficient way to perform catalytic reactions after deposition of the heating agent and the catalyst on a support. Here we show that in solution, and under mild conditions of mean temperature and pressure, it is possible to use magnetic heating to carry out transformations that are otherwise performed heterogeneously at high pressure and/or high temperature. As a proof of concept, we chose the hydrodeoxygenation of acetophenone derivatives and of biomass-derived molecules, namely furfural and hydroxymethylfurfural. These reactions are difficult, require heterogeneous catalysts and high pressures, and, to the best of our knowledge, have no precedent in standard solution. Here, hydrodeoxygenations are fully selective under mild conditions (3 bar H2, moderate mean temperature of the solvent). The reason for this reactivity is the fast heating of the particles well above the boiling temperature of the solvent and the local creation of hot spots surrounded by a vapor layer, in which high temperature and pressure may be present. This technology may be practicable for many organic transformations.
Isopropylation of ethyl benzene using MCM-41 and metals substituted MCM-41
Selvakumar,Stanly,Arabindoo, Banumathi
experimental part, p. 5313 - 5322 (2012/08/07)
Mesoporous MCM-41, Al-MCM-41, Fe-MCM-41, Mg-MCM-41 and Mn-MCM-41 were synthesized by hydrothermal process for catalytic applications. Tetradecyl trimethyl ammonium bromide was used as the structure directing template. Sodium silicate and salts of aluminium, iron, magnesium and manganese were the sources of silicon, aluminium, iron, magnesium and manganese, respectively. All the synthesised materials were characterised by BET, XRD and FTIR techniques. The XRD patterns of all the samples showed an intense signal at an angle of about 2?; (2θ) due to (100) plane of hexagonal mesophase. The patterns due to other planes were less intense. BET surface area of all the materials were in the range from 772-1273 m2/g and the pore diameter varies from 2.546- 2.663 nm. The catalytic performance of these materials has been tested for isopropylation of ethyl benzene. The influence of temperature, feed ratio and weight hourly space velocity (WHSV) were studied for all the aforesaid reactions for maximum conversion and product selectivity. In addition to p-isopropylethylbenzene, a commercially valuable compound diisopropyl ether was also obtained from isopropyl alcohol.
