Abstract
A house-of-cards architecture of silicoaluminophosphate was fabricated to enhance selectivity for hydroisomerization.
Highlights
Controlling the architecture of crystalline materials via a non-classical crystallization pathway provides a versatile route to optimise their properties
Monobranched isomers (MBs) and di-branched isomers (DBs) are produced sequentially, in addition to some highly branched isomers that are susceptible to β-scission, which leads to unwanted cracking side-products.[29,30,31,32,33]
Bao's group[13] has found that hierarchical SAPO-11 molecular sieves synthesized by using tetradecylphosphoric acid (TDPA) as template for the mesopores had a much higher mesoporous volume consisting of intracrystalline mesopores of 4–7 nm and a larger number of medium and strong Brønsted acid sites, active for n-octane isomerization
Summary
Controlling the architecture of crystalline materials via a non-classical crystallization pathway provides a versatile route to optimise their properties. The SAPO-11-C consists of micron-sized crystals with rough surfaces in addition to detached smaller ones, which is in line with previous reports (Fig. S2†).[51] In brief, the growth modifier assists the oriented assembly of nanocrystallites towards building up a more open architecture that can be accessed from the external surface.
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