Design of an MWW zeolite catalyst for linear alkylbenzene synthesis with improved catalytic stability

Abstract

Effect of micro–meso porosity of MWW zeolites on the catalytic linear alkylbenzene synthesis was studied.

Controlled direct synthesis of single- to multiple-layer MWW zeolite

“…The Friedel-Crafts alkylation of benzene with long chain α-olefin is an industrial process for the preparation of linear alkylbenzene (LAB), which can be catalyzed by different zeolites with 12MR pores in the liquid phase [ 44 ]. However, the fast deactivation of the zeolite catalysts due to the diffusion limitation is currently a major hurdle for practical applications [ 45 ]. Thus, the alkylation of benzene with 1-dodecene was used as a model reaction to assess the catalytic activity and lifetime of SL-MWW 0.1/0.35 .…”

Effect of surface silicon modification of H-beta zeolites for alkylation of benzene with 1-dodecene

“…4,19,21 However, the rapid deactivation of the zeolite is the primary barrier to industrial application. 22 Small crystal size zeolites have been researched to solve the deactivation problem of zeolites. Zeolites with small grains have large specic surface area, short channels and low diffusion limitation, which effectively increase anti-coking capability.…”

Comparison of surface passivation modification of two mordenite zeolites and their application on the isomerisation of o-ethyltoluene

“…Although commercial and hierarchical mordenites exhibit good catalytic performance during the isomerization of O-ET, the acid sites on the outer surface of mordenite are not shape-selective and can induce secondary reactions of isomerisation products. 15 Therefore, in order to improve the selectivity of isomerized products and prolong the catalytic life, modification of the acidic sites on the external surface of the zeolites is necessary. Recently, the deposition of chemical silicon and metal oxides on external surfaces of zeolites is often used to modify the acid sites.…”