Solid acid catalysts for dehydration of glycerol to acrolein in gas phase
Source abstract
Abstract
The reaction of glycerol dehydration to acrolein was performed at temperatures 220–300 °C over Keggin-type heteropolyacid (H3PW12O40·xH2O), supported on alumina and W-modified SBA-15 (Si/W = 20). The supports and catalysts were characterized by nitrogen adsorption, XRD, IR, UV–Vis DRS, SEM, and TPD of NH3. The acid sites strength, determined according to data from TPD of ammonia, follows the order: HPW/W-SBA-15 > W-SBA-15 > H3PW12O40 > HPW/γ-Al2O3 > γ-Al2O3. It was found that this order well correlates with the catalytic activity of studied samples. The most active and selective sample, HPW/W-SBA-15, showed acrolein selectivity of about 75% at almost 100% conversion of glycerol in all studied temperature interval.
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Research context
OpenAlex topics: Polyoxometalates: Synthesis and Applications · Catalysis for Biomass Conversion · biodegradable polymer synthesis and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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