TY - JOUR
T1 - Transformation of LPG to light olefins on composite HZSM-5/SAPO-5
AU - Wang, Kangzhou
AU - Zhang, Jianli
AU - Fan, Subing
AU - Peng, Xiaobo
AU - Tsubaki, Noritatsu
AU - Zhao, Tian Sheng
N1 - Publisher Copyright:
© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2021.
PY - 2021/3/14
Y1 - 2021/3/14
N2 - To selectively transform LPG (liquefied petroleum gas), composite HZSM-5/SAPO-5 zeolite catalysts were fabricated with an adjustable Brønsted acid/Lewis acid (BA/LA) ratio and a weak acid/strong acid (WA/SA) ratio. HZSM-5 powder (SiO2/Al2O3= 100) and SAPO-5 synthetic gel (SiO2/Al2O3= 0.2) were employed as the starting materials. Adopting a gel/solid weight ratio of 20 mL g−1and a crystallization temperature of 180 °C, the synthetic HZSM-5/SAPO-5-20-6 h catalyst showed a BA/LA ratio of 3.25 and a WA/SA ratio of 1.47, and during the conversion of LPG, the propylene and ethylene selectivity and theP/Eratio reached 72.22%, 62.56%, and 1.39, respectively, in a 600 °C fixed bed gas-phase reaction and aW/Fvalue of 15 g h mol−1was obtained. As the crystallization time was extended to 24 h, the BA/LA ratio became 2.83, and the propylene and ethylene selectivity increased to 68.50% while the selectivity for C5+HCs and CH4was reduced to 14.88% and 8.59%, respectively.
AB - To selectively transform LPG (liquefied petroleum gas), composite HZSM-5/SAPO-5 zeolite catalysts were fabricated with an adjustable Brønsted acid/Lewis acid (BA/LA) ratio and a weak acid/strong acid (WA/SA) ratio. HZSM-5 powder (SiO2/Al2O3= 100) and SAPO-5 synthetic gel (SiO2/Al2O3= 0.2) were employed as the starting materials. Adopting a gel/solid weight ratio of 20 mL g−1and a crystallization temperature of 180 °C, the synthetic HZSM-5/SAPO-5-20-6 h catalyst showed a BA/LA ratio of 3.25 and a WA/SA ratio of 1.47, and during the conversion of LPG, the propylene and ethylene selectivity and theP/Eratio reached 72.22%, 62.56%, and 1.39, respectively, in a 600 °C fixed bed gas-phase reaction and aW/Fvalue of 15 g h mol−1was obtained. As the crystallization time was extended to 24 h, the BA/LA ratio became 2.83, and the propylene and ethylene selectivity increased to 68.50% while the selectivity for C5+HCs and CH4was reduced to 14.88% and 8.59%, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85102684237&partnerID=8YFLogxK
U2 - 10.1039/d1nj00018g
DO - 10.1039/d1nj00018g
M3 - 学術論文
AN - SCOPUS:85102684237
SN - 1144-0546
VL - 45
SP - 4860
EP - 4866
JO - New Journal of Chemistry
JF - New Journal of Chemistry
IS - 10
ER -