Lee, Young Yi Ok, Hye Jeong Moon, Dong Ju Kim, Jong Ho Park, Nam Cook Kim, Young Chul 2024-01-20T13:04:24Z 2024-01-20T13:04:24Z 2021-09-01 2013-01 1533-4880 https://pubs.kist.re.kr/handle/201004/128491 Liquid-phase dehydration of glycerol to acrolein over nanosized niobia-supported silicotungstic acid catalysts was performed to investigate the effect of the silicotungstic acid loading on the catalytic performance of the catalysts. The catalysts were prepared by following an impregnation method with different HSiW loadings in the range of 10 similar to 50 wt%. The prepared catalysts were characterized by N-2 physisorption, XRD, FT-IR, TPD of ammonia, and TGA. Dehydration of glycerol was conducted in an autoclave reactor under the conditions of controlled reaction temperatures under corresponding pressure. Increasing HSiW loading rapidly increased the acidity of HSiW/Nb2O5 catalyst and rate of glycerol conversion, but acrolein selectivity decreased due to enhanced deactivation of the catalyst by carbon deposit. Consequently, it was confirmed that catalytic activity for the dehydration of glycerol to acrolein was dependant on the acidity of catalyst and can be controlled by HSiW loading. English AMER SCIENTIFIC PUBLISHERS GAS-PHASE DEHYDRATION SUSTAINABLE PRODUCTION ACROLEIN Dehydration of Glycerol Over Niobia-Supported Silicotungstic Acid Catalysts Article 10.1166/jnn.2013.6957 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.13, no.1, pp.339 - 343 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 13 1 339 343 scie scopus 000318254400043 2-s2.0-84876275850 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article GAS-PHASE DEHYDRATION SUSTAINABLE PRODUCTION ACROLEIN Niobium Oxide (Nb2O5) Silicotungstic Acid (H4SiW12O40) Glycerol Acrolein Dehydration