ZSM-5 Zeolite Single Crystals with b-Axis-Aligned Mesoporous Channels as an Efficient Catalyst for Conversion of Bulky Organic Molecules

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• 作者：Fujian Liu ; Tom Willhammar ; Liang Wang ; Longfeng Zhu ; Qi Sun ; Xiangju Meng ; Wilder Carrillo-Cabrera ; Xiaodong Zou ; Feng-Shou Xiao
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：March 14, 2012
• 年：2012
• 卷：134
• 期：10
• 页码：4557-4560
• 全文大小：307K
• 年卷期：v.134,no.10(March 14, 2012)
• ISSN：1520-5126

文摘

The relatively small and sole micropores in zeolite catalysts strongly influence the mass transfer and catalytic conversion of bulky molecules. We report here aluminosilicate zeolite ZSM-5 single crystals with b-axis-aligned mesopores, synthesized using a designed cationicamphiphilic copolymer as a mesoscale template. This sample exhibits excellent hydrothermal stability. The orientation of the mesopores was confirmed by scanning and transmission electron microscopy. More importantly, the b-axis-aligned mesoporous ZSM-5 shows much higher catalytic activities for bulky substrate conversion than conventional ZSM-5 and ZSM-5 with randomly oriented mesopores. The combination of good hydrothermal stability with high activities is important for design of novel zeolite catalysts. The b-axis-aligned mesoporous ZSM-5 reported here shows great potential for industrial applications.