Hydrogenation of succinic acid to tetrahydrofuran (THF) over rhenium catalyst supported on H2SO4-treated mesoporous carbon

Hydrogenation of succinic acid to 1,4-butanediol over Re–Ru bimetallic catalysts supported on mesoporous carbon

“…According to the previous works [12,13], it was revealed that the decrement of catalytic activity in the hydrogenation of succinic acid was mainly attributed to the leaching of active metal species under the harsh reaction conditions. For the recycle test, the spent catalyst was separated from liquid product by filtration, washed with deionized water, and dried in a vacuum oven at 60 • C after each reaction test.…”

“…Succinic acid is first transformed into ␥-butyrolactone (GBL) by hydrogenation, and then BDO or tetrahydrofuran (THF) is formed through consecutive hydrogenation of GBL [4]. For the catalytic conversion of succinic acid, various noble metal catalysts such as Pd [7][8][9], Pt [10], Rh [10], Ru [11,12], and Re [13] have been investigated. Among these catalysts, rhenium has been considered as the most efficient monometallic catalyst for the selective formation of BDO.…”

Acid‐Activated Carbon Materials: Cheaper Alternative Catalysts for the Synthesis of Substituted Quinolines

“…However, only a few examples of these porous carbon materials with catalytic applications have been reported. [20][21][22] From our most recent results aimed at the study of catalytic applications of mesoporous materials in the Friedländer reaction, we concluded that it is possible to modify the selectivity of the reaction as a function of the acid-base properties of the catalyst. Whereas the condensation between 2-aminoaryl ketones 1 and ethyl acetoacetate (2) catalyzed by acidic solids [(Al)SBA-15 or SBA-15/S, the latter containing sulfonic acids] yielded mixtures of the corresponding quinolines 3 and 4, basic catalysts, particularly amino-grafted MCM-41, afforded exclusively quinolone 4 with excellent yield (Scheme 1).…”

Recent Trends in the Production, Combustion and Modeling of Furan-Based Fuels

“…Using a 2 wt% Ru/C catalyst led to the complete conversion of succinic acid over a reaction period of 35 h. Succinic acid was converted to γ-butyrolactone and then further converted to THF. The conversion was not completed when a 2 wt% Pd/C catalyst was used for 50 h. Furthermore, a rhenium catalyst supported by mesoporous carbon (MC) treated with different H 2 SO 4 concentrations (Re/MC-X) was employed for the hydrogenation of succinic acid at liquid-phase to THF in a study by Hong et al [89] at 513 K and H 2 pressure of 80 bar. The results showed that using an H 2 SO 4 concentration of 0.4 M in the catalyst led to total succinic acid conversion and a maximum THF yield of 38.3%.…”

“…The production of THF from succinic acid was investigated in a number of studies [86][87][88][89]. A process for the continuous production of THF was presented by Kanetaka et al [86], through the direct maleic anhydride hydrogenation to succinic acid, which is further hydrogenated to THF.…”