Processes using molecular sieve SSZ-105

Patent metadata

Field	Value
Publication number	US-10272423-B2
Application number	US-201615276890-A
Country	US
Kind code	B2
Filing date	Sep 27, 2016
Priority date	Oct 16, 2015
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

Uses for a new crystalline molecular sieve designated SSZ-105 are disclosed. SSZ-105 is synthesized using N,N-dimethylpiperidinium cations as a structure directing agent. SSZ-105 is a disordered aluminosilicate molecular sieve comprising at least one intergrown phase of an ERI framework type molecular sieve and an LEV framework type molecular sieve.

First claim

The invention claimed is:

1. In a process for separating gases using a membrane containing a molecular sieve, the improvement comprising using as the molecular sieve an aluminosilicate molecular sieve composition having a SiO 2 /Al 2 O 3 mole ratio of from 10 to 50 comprising at least one intergrown phase comprising an ERI framework type molecular sieve and an LEV framework type molecular sieve.

2. A process for the production of light olefins from a feedstock comprising an oxygenate or mixture of oxygenates, the process comprising reacting the feedstock at effective conditions over a catalyst comprising an aluminosilicate molecular sieve composition having a SiO 2 /Al 2 O 3 mole ratio of from 10 to 50 comprising at least one intergrown phase comprising an ERI framework type molecular sieve and an LEV framework type molecular sieve.

3. The process of claim 2 , wherein the light olefins are ethylene, propylene, butylene, or mixtures thereof.

4. The process of claim 2 , wherein the oxygenate is methanol, dimethyl ether, or a mixture thereof.

5. A process for producing methylamine or dimethylamine comprising reacting methanol, dimethyl ether, or a mixture thereof, and ammonia in the gaseous phase in the presence of a catalyst comprising an aluminosilicate molecular sieve composition having a SiO 2 /Al 2 O 3 mole ratio of from 10 to 50 comprising at least one intergrown phase comprising an ERI framework type molecular sieve and an LEV framework type molecular sieve.

6. The process of claim 5 , wherein the methanol, dimethyl ether, or mixture thereof, and ammonia are present in amounts sufficient to provide a carbon/nitrogen ratio of from 0.2 to 1.5.

7. The process of claim 5 , conducted at a temperature of from 250° C. to 450° C.

8. A process for the reduction of oxides of nitrogen contained in a gas stream, wherein the process comprises contacting the gas stream with an aluminosilicate molecular sieve composition having a SiO 2 /Al 2 O 3 mole ration of from 10 to 50 comprising at least one intergrown phase comprising an ERI framework type molecular sieve and an LEV framework type molecular sieve.

9. The process of claim 8 , conducted in the presence of oxygen.

10. The process of claim 8 , wherein the molecular sieve composition contains one or more metals selected from the group consisting of Cr, Mn, Re, Mo, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Zn, Ga, In, Sn, and mixtures thereof.

11. The process of claim 10 , wherein the metal is present in an amount of from 0.01 to 6 wt. %, based on the total weight of the molecular sieve composition.

12. The process of claim 8 , wherein the gas stream is the exhaust stream of an internal combustion engine.

13. A process for treating exhaust gas that comprises a hydrocarbon combustion product, the method comprising:
(a) contacting the exhaust gas with a molecular sieve composition for a period of time effective to facilitate adsorption of the hydrocarbon combustion product by the molecular sieve;
(b) passing a purge gas through the molecular sieve composition to remove adsorbed hydrocarbon combustion product therefrom; and
(c) contacting the purge gas containing the removed hydrocarbon combustion product with a hydrocarbon conversion catalyst;

wherein the molecular sieve composition is an aluminosilicate molecular sieve composition having a SiO 2 /Al 2 O 3 mole ratio of from 10 to 50 comprising at least one intergrown phase comprising an ERI framework type molecular sieve and an LEV framework type molecular sieve.

14. The process of claim 13 , wherein the exhaust gas contains a plurality of hydrocarbon combustion products.

15. The process of claim 13 , wherein the hydrocarbon combustion product is derived from the combustion of hydrocarbon fuel in an engine.

Assignees

• Chevron Usa Inc

Inventors

• Xie Dan
• Lew Christopher Michael

Classifications

• C07C2529/50

  of the eroionite or offretite type, e.g. zeolite T · CPC title

• B01D2255/30

  Silica · CPC title

• B01D2257/702

  Hydrocarbons · CPC title

• Y02P20/152

  Cross-Sectional Technologies · mapped topic

• B01D2255/2092

  Aluminium · CPC title