Lee, Young Yi Moon, Dong Ju Kim, Jong Ho Park, Nam Cook Kim, Young Chul 2024-01-20T16:33:43Z 2024-01-20T16:33:43Z 2021-09-04 2011-08 1533-4880 https://pubs.kist.re.kr/handle/201004/130154 The dehydration of glycerol over nanosize niobium catalysts was conducted in a stainless steel autoclave reactor. The catalysts were prepared by the calcination of niobium oxalate between 200 and 700 degrees C. Catalysts were characterized by N-2 Physisorption, XRD and TPD of ammonia to investigate the effect of the calcination temperature and water on catalytic performance, catalysts' structures and acidity. Acrolein was mainly produced about 51-71% with useful by-products such as acetaldehyde and methanol. Amorphous Nb2O5 catalysts calcined at 200-400 degrees C significantly showed higher conversion of glycerol than the crystallized Nb2O5 catalyst calcined at 500-700 degrees C. Also the conversion of glycerol and selectivity of acrolein was increased with increasing the acidity of catalyst, which can be controlled by calcination temperature. English AMER SCIENTIFIC PUBLISHERS GAS-PHASE DEHYDRATION SUSTAINABLE PRODUCTION ACROLEIN Studies on the Dehydration of Glycerol Over Niobium Catalysts Article 10.1166/jnn.2011.4797 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.11, no.8, pp.7128 - 7131 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 11 8 7128 7131 scie scopus 000295296400079 2-s2.0-84863064909 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article; Proceedings Paper GAS-PHASE DEHYDRATION SUSTAINABLE PRODUCTION ACROLEIN Niobium Oxide (Nb2O5) Glycerol Acrolein Dehydration