High-silica nanocrystalline Beta zeolites: efficient synthesis and catalytic application.

High-silica nanocrystalline Beta zeolites: efficient synthesis and catalytic application.
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DOI:
10.1039/c5sc03019f
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发表时间:
2016-01-01
期刊:
影响因子:
8.4
通讯作者:
Corma A
Corma A
中科院分区:
化学1区
文献类型:
--
作者:
Martínez-Franco R;Paris C;Martínez-Armero ME;Martínez C;Moliner M;Corma A

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本文描述了一种利用简单烷基取代的柔性硅氧烷偶联硅氧烷(osda)获得高固相收率(95%以上)的纳米级高硅β沸石(~ 10-20 nm)的高效合成方法。本文描述了一种利用简单烷基取代的柔性硅氧烷偶联硅氧烷(osda)获得高固相收率(95%以上)的纳米级高硅β沸石(~ 10-20 nm)的高效合成方法。这些指示osda允许在碱性和氟化物介质中合成具有不同Si/Al比(15-30)的纳米级β沸石,从而产生具有不同物理化学性质的纳米晶材料。与其他市售纳米沸石相比,这些纳米沸石对苯与丙烯的工业烷基化反应表现出更好的催化性能。
An efficient synthesis methodology to obtain homogeneous nanosized high-silica Beta zeolites (∼10–20 nm) with high solid yields (above 95%) using simple alkyl-substituted flexible dicationic OSDAs is described. An efficient synthesis methodology to obtain homogeneous nanosized high-silica Beta zeolites (∼10–20 nm) with high solid yields (above 95%) using simple alkyl-substituted flexible dicationic OSDAs is described. These dicationic OSDAs allow the synthesis of nanosized Beta zeolites with different Si/Al ratios (15–30) in alkaline and fluoride media, resulting in nanocrystalline materials with different physico-chemical properties. These nanosized Beta zeolites show better catalytic behavior towards the industrially-relevant alkylation of benzene with propylene to obtain cumene compared with other commercially available nanosized Beta zeolites.
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