Green routes for the synthesis of hierarchical HZSM-5 zeolites with low SiO2/Al2O3 ratios for enhanced catalytic performance,Catalysis Communications

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Green routes for the synthesis of hierarchical HZSM-5 zeolites with low SiO2/Al2O3 ratios for enhanced catalytic performance
Catalysis Communications ( IF 3.4 ) Pub Date : 2018-05-25 , DOI: 10.1016/j.catcom.2018.05.018
Yunhao Zang , Xinfa Dong , Dan Ping , Jianming Geng , Haifeng Dang

In the present work, hierarchical HZSM-5 zeolites with SiO₂/Al₂O₃ ratios of low to 30 are synthesized via a modified steam-assisted crystallization (SAC) process without using sodium hydroxide. The results showed that sucrose is an effective template for the formation of hierarchical HZSM-5 zeolites, and possessed large meso/macroporous volume of >0.32 cm³ g⁻¹. The results also showed that the synthesized hierarchical HZSM-5 zeolites exhibited better catalytic stability than microporous HZSM-5 in dimethyl ether steam reforming (DME SR).

中文翻译：

合成具有低SiO ₂ / Al ₂ O ₃比的分级HZSM-5分子筛的绿色路线，以增强催化性能

在本工作中，通过改进的蒸汽辅助结晶（SAC）工艺，无需使用氢氧化钠即可合成SiO ₂ / Al ₂ O ₃比低至30的分级HZSM-5沸石。结果表明，蔗糖是形成分层HZSM-5沸石的有效模板，并且具有大于0.32cm ³  g ^-1的大的介孔/大孔体积。结果还表明，在二甲醚蒸汽重整（DME SR）中，合成的分级HZSM-5沸石显示出比微孔HZSM-5更好的催化稳定性。

更新日期：2018-05-25

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