Selective p-xylene production from biomass-derived dimethylfuran and ethylene over zeolite beta nanosponge catalysts

Carboxylic acids to butyl esters over dealuminated–realuminated beta zeolites for removing organic acids from bio-oils

“…4 gives the XRD patterns of the different beta zeolites. It can be seen that, similar to the parent H-beta zeolite, all of the organic acid leached samples have the XRD patterns displaying representative Bragg reec-tions corresponding to the typical BEA zeolite topology, 40,41 and all have well-maintained crystalline structure, in agreement with the literature results for acid leached beta zeolites. 39 It is well known that the distinct signal at 2q ¼ 6.5-8.…”

Production of renewable toluene from biomass-derived furans via Diels-Alder and dehydration reactions: A comparative study of Lewis acid catalysts

“…BTX aromatics are particularly utilized as precursors in the production of polystyrene, polyurethane, and polyethylene terephthalate (PET), for whose demand has increased globally [5]. Recently, a thermochemical route to produce renewable BTX aromatics from biomass-derived furans (i.e., 2,5-dimethylfuran (DMF), 2-methylfuran (MF), furan) and ethylene via Diels-Alder cycloaddition and subsequent dehydration reactions, has been proposed using solid Brønsted and Lewis acid catalysts [6][7][8][9][10][11][12][13][14][15][16][17]. Because ethylene can also easily be obtained by the dehydration of bio-ethanol [18], this route can be considered as a fully sustainable process for the production of BTX chemicals.…”

“…Because ethylene can also easily be obtained by the dehydration of bio-ethanol [18], this route can be considered as a fully sustainable process for the production of BTX chemicals. The selective production of renewable p-xylene from DMF has been reported for microporous catalysts such as H-Beta zeolite [7], and for mesoporous materials such as mesoporous beta zeolite with a nanosponge-like morphology (NSP-BEA) [12], and silica-alumina aerogel (SAA) [11] catalysts with 70-90% p-xylene selectivity and greater than 90% DMF conversion. In contrast, with regard to toluene production from MF, only limited work has been done, mainly using solid Brønsted acid catalysts.…”

Environmental Catalysis: Present and Future

“…Reproduced with permission of ref. [77] Copyright, 2015 Royal Society of Chemistry. [87] Copyright, 2018 Frontiers and (B) Proline-based heterogeneous organocatalyst for selective production of vanillin from vanillyl alcohol and isoeugenol.…”