A metal-modified composite molecular sieve, its preparation method and its application in the reaction of methanol conversion to propylene and butene

A composite molecular sieve and metal modification technology, applied in molecular sieve catalysts, chemical instruments and methods, and hydrocarbon production from oxygen-containing organic compounds, can solve the problem of reducing the selectivity of propylene
CN106179481BActive Publication Date: 2018-12-11CHNA ENERGY INVESTMENT CORP LTD +1
6 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHNA ENERGY INVESTMENT CORP LTD
Publication Date
2018-12-11

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a metal-modified SAPO-5 / SAPO-34 composite molecular sieve, particularly, metal-modified lanthanide series metal isomorphous substitution. The invention further discloses a preparation method of the metal-modified SAPO-5 / SAPO-34 composite molecular sieve. When the metal-modified SAPO-5 / SAPO-34 composite molecular sieve is used for a reaction of preparing low carbon olefins by using organic oxygen-containing compounds, the composite molecular sieve has favorable catalytic activity, excellent propylene and butene selectivity and long service life.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a metal-modified SAPO-5 / SAPO-34 composite molecular sieve and a preparation method thereof. The metal-modified composite molecular sieve is used for preparing low-carbon olefins from organic oxygen-containing compounds to increase the yield of propylene and butene. Background technique

[0002] With the shortage of petroleum resources and rising prices, the production of ethylene and propylene is light, and C 4 Resources are increasingly scarce.

[0003] The traditional methanol-to-olefins process (MTO) mainly uses ethylene and / or propylene as the target products, butene and C 5 + Components above hydrocarbons are only by-products, where C 4 The yield of mixed hydrocarbons is about 5.5%, the C 4 Among the mixed hydrocarbons, the content of 1,3-butadiene and isobutene is relatively low, and the main components are butene-1 and butene-2, which account for about 90%. (See "Market Demand and Processing Technology Analysis of C...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More