Processes using molecular sieve SSZ-98

Patent metadata

Field	Value
Publication number	US-9700878-B2
Application number	US-201514790921-A
Country	US
Kind code	B2
Filing date	Jul 2, 2015
Priority date	Jul 3, 2014
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

Uses for a new crystalline molecular sieve designated SSZ-98 are disclosed. SSZ-98 has the ERI framework type and is synthesized using a N,N′-dimethyl-1,4-diazabicyclo[2.2.2]octane dication as a structure directing agent.

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 ERI framework type molecular sieve having a SiO 2 /Al 2 O 3 mole ratio of from 15 to 50, and having, in its calcined form, an X-ray diffraction substantially as shown in the following Table:

2-Theta
d-spacing (nm)
Relative Intensity

 7.76 ± 0.20
1.138
VS

 9.78 ± 0.20
0.904
W

11.79 ± 0.20
0.750
W

13.45 ± 0.20
0.658
VS

14.07 ± 0.20
0.629
W

15.51 ± 0.20
0.571
W

16.61 ± 0.20
0.533
W

19.50 ± 0.20
0.455
W

20.54 ± 0.20
0.432
S

21.39 ± 0.20
0.415
W

23.37 ± 0.20
0.380
M

23.73 ± 0.20
0.375
S

24.92 ± 0.20
0.357
W

and wherein the molecular sieve has either a rod-like crystal morphology or a plate crystal morphology.

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 ERI framework type molecular sieve having a SiO 2 /Al 2 O 3 mole ratio of from 15 to 50, and having, in its calcined form, an X-ray diffraction pattern substantially as shown in the following Table:

2-Theta
d-spacing (nm)
Relative Intensity

 7.76 ± 0.20
1.138
VS

 9.78 ± 0.20
0.904
W

11.79 ± 0.20
0.750
W

13.45 ± 0.20
0.658
VS

14.07 ± 0.20
0.629
W

15.51 ± 0.20
0.571
W

16.61 ± 0.20
0.533
W

19.50 ± 0.20
0.455
W

20.54 ± 0.20
0.432
S

21.39 ± 0.20
0.415
W

23.37 ± 0.20
0.380
M

23.73 ± 0.20
0.375
S

24.92 ± 0.20
0.357
W

and wherein the molecular sieve has either a rod-like crystal morphology or a plate crystal morphology.

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 ERI framework type molecular sieve having a SiO 2 /Al 2 O 3 mole ratio of from 15 to 50, and having, in its calcined form, an X-ray diffraction pattern substantially as shown in the following Table:

2-Theta
d-spacing (nm)
Relative Intensity

 7.76 ± 0.20
1.138
VS

 9.78 ± 0.20
0.904
W

11.79 ± 0.20
0.750
W

13.45 ± 0.20
0.658
VS

14.07 ± 0.20
0.629
W

15.51 ± 0.20
0.571
W

16.61 ± 0.20
0.533
W

19.50 ± 0.20
0.455
W

20.54 ± 0.20
0.432
S

21.39 ± 0.20
0.415
W

23.37 ± 0.20
0.380
M

23.73 ± 0.20
0.375
S

24.92 ± 0.20
0.357
W

and wherein the molecular sieve has either a rod-like crystal morphology or a plate crystal morphology.

6. A process for the reduction of oxides of nitrogen contained in a gas stream where

Assignees

• Xie Dan
• Zones Stacey Ian
• Lew Christopher Michael
• Davis Tracy Margaret
• Chevron Usa Inc

Inventors

• Xie Dan
• Zones Stacey Ian
• Lew Christopher Michael
• Davis Tracy Margaret

Classifications

• C07C2529/70

  of types characterised by their specific structure not provided for in groups C07C2529/08 - C07C2529/65 · CPC title

• B01D53/9486

  for storing hydrocarbons · CPC title

• B01D53/02

  by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)} · CPC title

• B01D53/9418

  for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas · CPC title

• B01J29/54

  Noble metals · CPC title