# US 9,434,614 B2 · Perovskite-type strontium titanate

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- Number: US 9,434,614 B2
- Document ID: US9434614B2
- Status: Granted
- Kind: B2
- Application number: 13/335,890
- Filed: 2011-12-22
- Published: 2012-07-26
- Granted: 2016-09-06
- Earliest claimed: 2010-12-23
- Assignees: Agency for Science, Technology and Research
- Applicants: Wei Wang; Liang Hong; Zetao Xia; Zhaolin Liu; Teng Sheng Peh
- Inventors: Wei Wang; Liang Hong; Zetao Xia; Zhaolin Liu; Teng Sheng Peh
- Web page: https://patentgrep.com/patent/US9434614B2

## CPC

- B01J 23/83: with rare earths or actinides
- B01J 21/063: {Titanium; Oxides or hydroxides thereof}
- B01J 23/002: {Mixed oxides other than spinels, e.g. perovskite}
- B01J 35/733: {Perovskite-type}
- B01J 37/03: Precipitation; Co-precipitation
- B01J 37/033: {Using Hydrolysis}
- B01J 37/08: Heat treatment {(B01J37/0009, B01J37/0018 take precedence)}
- C01B 3/40: characterised by the catalyst
- B01J 35/30: characterised by their physical properties
- B01J 2235/15: X-ray diffraction
- B01J 2235/30: Scanning electron microscopy; Transmission electron microscopy
- B01J 2523/00: Constitutive chemical elements of heterogeneous catalysts
- C01B 2203/0244: the reforming step being an autothermal reforming step, e.g. secondary reforming processes
- C01B 2203/1041: Composition of the catalyst
- C01B 2203/1058: Nickel catalysts
- C01B 2203/1235: Hydrocarbons
- C01B 2203/1247: Higher hydrocarbons
- C01G 23/006: {Alkaline earth titanates}
- Y02P 20/52: using catalysts, e.g. selective catalysts
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The present invention relates to a perovskite-type strontium titanate, wherein the strontium titanate is Y- and Ni-doped and has the general formula (Sr,Y)(Ti,Ni)O3. A method of preparing the perovskite-type strontium titanate and its use are also provided.

## Claims

### Claim 1

A perovskite-type strontium titanate, wherein the strontium titanate is Y- and Ni-doped and has the general formula of (SraYb)d(Ti1-cNic)O3, wherein a+b is greater than 1 and 0.8≦a≦1; 0<b≦0.2; 0<c≦0.1; and 1≦d≦1.2.

### Claim 2 (depends on 1)

The perovskite-type strontium titanate of claim 1, wherein a is from about 0.88 to about 0.98.

### Claim 3 (depends on 1)

The perovskite-type strontium titanate of claim 1, wherein b is from about 0.08 to about 0.12.

### Claim 4 (depends on 1)

The perovskite-type strontium titanate of claim 1, wherein c is from about 0.06 to about 0.08.

### Claim 5 (depends on 1)

The perovskite-type strontium titanate of claim 1 having the formula (Sr0.97Y0.10)(Ti0.94Ni0.06)O3.

### Claim 6 (depends on 1)

The perovskite-type strontium titanate of claim 1 having the formula (Sr0.97Y0.10)(Ti0.92Ni0.08)O3.

### Claim 7

A catalyst comprising:
a perovskite-type strontium titanate, wherein the strontium titanate is Y- and Ni-doped and has the general formula of (SraYb)d(Ti1-cNic)O3, wherein a+b is greater than 1 and 0.8≦a≦1; 0<b≦0.2; 0<c≦0.1; and 1≦d≦1.2.

### Claim 8

A method comprising:
using a catalyst for autothermal reforming of a fuel, wherein the catalyst comprises a perovskite-type strontium titanate, wherein the strontium titanate is Y- and Ni-doped and has the general formula of (SraYb)d(Ti1-cNic)O3, wherein a+b is greater than 1 and 0.8≦a≦1; 0<b≦0.2; 0<c≦0.1; and 1≦d≦1.2.

### Claim 9

A method for autothermal reforming of a fuel, comprising contacting a catalyst with said fuel, wherein the catalyst comprises a perovskite-type strontium titanate, wherein the strontium titanate is Y- and Ni-doped and has the general formula of (SraYb)d(Ti1-cNic)O3, wherein a+b is greater than 1 and 0.8≦a≦1; 0<b≦0.2; 0<c≦0.1; and 1≦d≦1.2.

### Claim 10 (depends on 9)

The method of claim 9, wherein the fuel is a diesel fuel.

### Claim 11 (depends on 9)

The method of claim 9, wherein the fuel comprises less than about 30 mol % aromatic compounds.

### Claim 12 (depends on 9)

The method of claim 9, wherein the fuel comprises less than about 50 ppm sulfur-containing compounds.