Preparation method of shape-selective catalyst for synthesizing p-xylene

Preparation method of shape-selective catalyst for synthesizing p-xylene

The invention relates to a preparation method of a shape-selective catalyst for synthesizing p-xylene. The method comprises the following steps: taking a microporous molecular sieve ZSM-5 or MCM-22 as a matrix, taking boric acid as a precursor, adjusting an aperture size of the microporous molecular...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TANG MENGHAN, WEN LINZHI, XUE BING, LIU NA, TIAN YING, LI YONGXIN, ZHANG LIZHU
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:The invention relates to a preparation method of a shape-selective catalyst for synthesizing p-xylene. The method comprises the following steps: taking a microporous molecular sieve ZSM-5 or MCM-22 as a matrix, taking boric acid as a precursor, adjusting an aperture size of the microporous molecular sieve by dipping the material through a wet method, and loading boron oxide on the external surface of the microporous molecular sieve by a solid-phase reaction method to obtain the boron-modified microporous molecular sieve shape-selective catalyst. The obtained catalyst has good shape-selective catalysis performance for alkylation and synthesis of p-xylene by toluene and methanol.