Selective skeletal isomerization of 1-butene over FER-type zeolites derived from PLS-3 lamellar precursors

Authors: Boting Yang, Jin-gang Jiang, Hao Xu, Yuming Liu, Honggen Peng, Peng Wu

Abstract:
Layered aluminosilicates of PLS-3 were hydrothermally synthesized and employed as the catalysts for the skeletal isomerization of 1-butene. PLS-3 lamellar precursors were successfully prepared at different Si/Al ratios (40–∞) using layered silicate H-kanemite as silica source and tetramethylammonium hydroxide as structure directing agent. A direct calcination caused an interlayer dehydration condensation, converting the precursors into 3-dimensional FER structure with an intersecting micropore system of 8 × 10-membered rings. The physicochemical properties of the Al-PLS-3 materials thus prepared were characterized by various techniques. Their catalytic properties in the skeletal isomerization of 1-butene has beeninvestigatedandcompared withconventionalferrierite.Al-PLS-3 synthesizedat Si/Al = 50 exhibited the same catalytic reactivity as commercial ferrierite. However, possessing smaller crystal size, Al-PLS-3 possessed a much longer catalytic duration against coke formation.

Keywords:
Lamellar zeolites
PLS-3
FER
Hydrothermal synthesis
1-Butene isomerization

Published in: Applied catalysis A: General  (Volume 455, Pages 1-266, 30 March 2013)

Publisher: Elsevier

ISSN Information: 0926-860X

Selective skeletal isomerization of 1-butene over FER-type zeolites derived from PLS-3 lamellar precursors

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