caa a22 4500 469126280 CHVBK 20180323133151.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF02697410 doi (NATIONALLICENCE)springer-10.1007/BF02697410 Characterization of AlPO4-based molecular sieves and methanol conversion to light olefins [Elektronische Daten] [Seung Oh, Wha Lee] Of the AlPO4-based molecular sieves, A1PO4, SAPOs, and MeAPOs of different pore sizes were prepared at 100-200°C by a hydrothermal crystallization method. This study was purposed to maximize the yield of light olefins through methanol conversion. Crystal structure was confirmed by means of XRD and SEM, and acidity was examined by TPD and IR of adsorbed ammonia on the catalysts. It was found that SAPO-34 exhibited more than 90% selectivity for light olefins such as ethylene, propylene, and butylene due to shape selectivity through small pores, although it had a strong acidity. MeAPO-34 exhibited slightly lower selectivity for light olefins than SAPO-34 and different product distribution, depending on the electronegativity of the metal in its framework. SAPO17 and SAPO-44, which have the same pore size with SAPO-34 but different pore structure from SAPO-34, showed less selectivity for light olefins than SAPO-34. Korean Institute of Chemical Engineering, 1992 Oh Seung Dept. of Chemical Engineering, Seoul National University, 151-742, Seoul, Korea aut Lee Wha Dept. of Chemical Engineering, Seoul National University, 151-742, Seoul, Korea aut Korean Journal of Chemical Engineering Springer-Verlag 9/1(1992-01-01), 37-44 0256-1115 9:1<37 1992 9 11814 https://doi.org/10.1007/BF02697410 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02697410 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Oh Seung Dept. of Chemical Engineering, Seoul National University, 151-742, Seoul, Korea aut NATIONALLICENCE 700 1- Lee Wha Dept. of Chemical Engineering, Seoul National University, 151-742, Seoul, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer-Verlag 9/1(1992-01-01), 37-44 0256-1115 9:1<37 1992 9 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer