Catalyst for fischer-tropsch synthesis and method for preparing the same, and method for preparing modified molecular sieve carrier

Patent metadata

Field	Value
Publication number	US-10220375-B2
Application number	US-201514923404-A
Country	US
Kind code	B2
Filing date	Oct 26, 2015
Priority date	Apr 25, 2013
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

A catalyst, including a molecular sieve carrier and an active component. The active component includes: iron, manganese, copper, and a basic promoter potassium. The molecular sieve carrier is a cerium salt and/or praseodymium salt modified-aluminosilicate molecular sieve carrier and/or silica-rich molecular sieve carrier. A method for preparing a catalyst for Fischer-Tropsch synthesis, includes: 1) fully dissolving a ferric salt, a manganese salt, a copper salt, and an alkali or a salt containing potassium element in water to yield an aqueous solution, stirring and adding sodium lauryl sulfate to the aqueous solution, and continuing stirring to yield a uniform solution; and impregnating a modified molecular sieve in the uniform solution to yield a mixed solution; and 2) drying and calcining the mixed solution to yield the catalyst.

First claim

The invention claimed is:

1. A catalyst, comprising:
an active component, the active component comprising iron, manganese, copper, and potassium; and
a modified molecular sieve carrier, the modified molecular sieve carrier comprising a zeolite and a cerium salt and/or a praseodymium salt;

wherein:
the zeolite is SSZ-13, SAPO-34, or ZSM-5; and
the catalyst comprises between 10 and 35 wt. % of iron, between 1 and 20 wt. % of manganese, between 1 and 20 wt. % of copper, between 1 and 10 wt. % of potassium, and between 40 and 80 wt. % of the molecular sieve carrier.

2. The catalyst of claim 1 , wherein the cerium salt and/or the praseodymium salt account(s) for between 1 and 20 wt. % of the modified molecular sieve carrier.

3. The catalyst of claim 1 , wherein the cerium salt and/or the praseodymium salt account(s) for between 10 and 20 wt. % of the modified molecular sieve carrier.

Assignees

• Wuhan Kaidi Eng Tech Res Inst

Inventors

• Yang Weiguang
• Liu Qianqian
• Song Dechen
• Li Changyuan
• Zhan Xiaodong
• Jin Jiaqi
• Zhang Yanfeng

Classifications

• B01J37/0201

  Impregnation · CPC title

• C07C2529/46

  Iron group metals or copper · CPC title

• C07C2529/78

  containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium · CPC title

• B01J37/0236

  Drying, e.g. preparing a suspension, adding a soluble salt and drying · CPC title

• C07C2529/035

  Crystalline silica polymorphs, e.g. silicalites · CPC title