Modified X-type molecular sieve, preparation method and application

Modified X-type molecular sieve, preparation method and application

The invention relates to a modified X-type molecular sieve as well as a preparation method and application thereof. The outer surface area of the modified X-type molecular sieve is 9.5-19 m < 2 >/g, and the sum of the pore volumes of mesopores and macropores is 6%-18% of the total pore volume....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WANG HUIGUO, TUO PENGFEI, GAO NINGNING, CHEN TIANTIAN, GAO JUNKUI, ZHONG JIN
Format: Patent
Sprache:chi ; eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:The invention relates to a modified X-type molecular sieve as well as a preparation method and application thereof. The outer surface area of the modified X-type molecular sieve is 9.5-19 m < 2 >/g, and the sum of the pore volumes of mesopores and macropores is 6%-18% of the total pore volume. The modified X-type molecular sieve is used for adsorbing and separating p-xylene from mixed C8 aromatic hydrocarbon, and has good p-xylene separation performance. 本发明涉及一种改性X型分子筛，它的制备方法和用途。所述改性X型分子筛的外表面积为9.5-19m2/g，介孔与大孔的孔容之和为总孔容的6％-18％。所述改性X型分子筛用于从混合C8芳烃中吸附分离对二甲苯，具有良好的对二甲苯分离性能。