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Polyethyleneimine templated synthesis of hierarchical SAPO-34 zeolites with uniform mesopores

机译:聚乙烯亚胺模板化合成具有均匀中孔的分级SAPO-34沸石

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摘要

SAPO-34 zeolites with uniform mesopores have been successfully synthesized using polyethyleneimine (PEI) dendrimer as co-template through conventional hydrothermal synthesis for microporous crystalline SAPO-34. This series of SAPO-34 possesses higher BET specific surface area (as high as 560 m(2) g(-1)) and larger mesoporous volume (as large as 0.27 cm(3) g(-1)). The size and volume for the mesopores can be adjusted by the molecular weight and the amount of the PEI added. The hierarchical SAPO-34 would be a potential industrial catalyst for methanol-to-olefin (MTO) and methanol-to-propylene (MTP) conversions.
机译:已经通过常规水热合成微孔晶体SAPO-34的聚乙烯亚胺(PEI)树状大分子作为共模板成功地合成了具有均匀中孔的SAPO-34沸石。该系列的SAPO-34具有更高的BET比表面积(高达560 m(2)g(-1))和更大的中孔体积(高达0.27 cm(3)g(-1))。中孔的大小和体积可以通过分子量和PEI的添加量来调节。分级的SAPO-34将成为甲醇到烯烃(MTO)和甲醇到丙烯(MTP)转化的潜在工业催化剂。

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