SAPO-34 zeolite having diglycolamine as templating agent and synthesis method for the zeolite

US9611150B2 · kind B2 · utility

Assignee

• DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES · CN

Inventors

• Dehua Wang · Beijing, CN
• Peng Tian · 东风镇, CN
• Zhongmin Liu · 东风镇, CN
• Dong Fan · Dalian, CN
• Ying Zhang · Woodbury, US
• Xiong Su · 东风镇, CN

Key dates

• Filing date: Dec 10, 2012
• Grant date: Apr 4, 2017
• Expiry date: Jun 1, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B37/08
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention provides a SAPO-34 molecular sieve, whose chemical composition in the anhydrous state is expressed as: mDGA.(SixAlyPz)O2; wherein DGA is diglycolamine, distributing in the cages and pores of said molecular sieve; m is the molar number of the template agent diglycolamine per one mole of (SixAlyPz)O2, and m is from 0.03 to 0.25; x, y, z respectively represents the molar number of Si, Al, P, and x is from 0.01 to 0.30, and y is from 0.40 to 0.60, and z is from 0.25 to 0.49, and x+y+z=1. Said SAPO-34 molecular sieve can be used as an acid-catalyzed reaction catalyst, such as a methanol to olefins reaction catalyst. The present invention also concerns the application of said SAPO-34 molecular sieve in adsorption separation of CH4 and CO2.