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The synthesis of endurable B–Al–ZSM-5 catalysts with tunable acidity for methanol to propylene reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
50599 46804 2012 4 PDF Available
Title
The synthesis of endurable B–Al–ZSM-5 catalysts with tunable acidity for methanol to propylene reaction
Abstract

A series of boron isomorphously framework-substituted ZSM-5 (Bx–Al–ZSM-5, Si/Al = 200, B/Al = X) were synthesized and used to selectively transform methanol to propylene (MTP). The catalytic stability can be significantly influenced by B incorporation. In comparison with the conventional ZSM-5, the B1–Al–ZSM-5 catalyst afforded a 7-time-long catalytic life under a space velocity of WHSV 1.8 h− 1 (700 h for B1–Al–ZSM-5 and 100 h for ZSM-5, respectively). The enhancement of catalytic stability can be attributed to the increase of weak acid sites on the ZSM-5 catalysts.

Graphical abstractConversion of methanol (a) and selectivity of propylene (b) over zeolites B0–Al–ZSM-5 (□), B0.5–Al–ZSM-5 (■), B1–Al–ZSM-5 (▽), B2–Al–ZSM-5 (▼). Reaction conditions: WHSV = 1.8 h−1, T = 460 °C, n (CH3OH) : n (H2O) = 1 : 3, Ptotal = 1 atm.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► ZSM-5 zeolite catalysts with tunable acidity are synthesized. ► Weak acid amount is adjusted whereas strong acid amount keeps constant. ► Acidity is tuned to improve catalytic stability and product selectivity. ► Catalytic stability is remarkably enhanced after B incorporation in MTP reaction.

Keywords
Methanol; Propylene; ZSM-5; Boron; Isomorphous substitution; Methanol to propylene (MTP)
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The synthesis of endurable B–Al–ZSM-5 catalysts with tunable acidity for methanol to propylene reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 24, 5 July 2012, Pages 44–47
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us