Source: http://www.google.com/patents/US4280926?dq=3657699
Timestamp: 2017-12-12 17:25:21
Document Index: 696304875

Matched Legal Cases: ['arts  82', 'arts  23', 'arts  105', 'arts  62', 'arts 66', 'arts  79']

Patent US4280926 - Method for producing a catalyst and a carrier therefor - Google Patents
A method is provided for producing a catalyst and a carrier therefor in the form of sheet or honeycomb. The method comprises: beating a heat-resistant fiber such as asbesto fiber in water to form a slurry; mixing the slurry with a catalytically active agent, a carrier material therefor and/or their precursors...http://www.google.com/patents/US4280926?utm_source=gb-gplus-sharePatent US4280926 - Method for producing a catalyst and a carrier therefor
Publication number US4280926 A
Application number US 06/072,599
Also published as DE2936927A1, DE2936927C2, DE2954517C2, US4416800
Publication number 06072599, 072599, US 4280926 A, US 4280926A, US-A-4280926, US4280926 A, US4280926A
Patent Citations (3), Referenced by (55), Classifications (44), Legal Events (1)
US 4280926 A
1. A method for producing a catalytic material for the reduction of nitrogen oxides in the presence of ammonia, which consists essentially of admixing:
(a) a slurry prepared by beating at least one of inorganic heat-resistant fibers of about 1-20 mm in fiber length and of about 0.1-30 microns in diameter selected from the group consisting of asbestos fiber, silica fiber, silica-alumina fiber, chrysotile fiber, rock wool, glass fiber, anthophyllite fiber, potassium titanate fiber, carbon fiber and ceramic fiber, in water,
(b) at least one powdery catalytic material having a particle size of about 0.01 to 50 microns and being an oxide selected from the group consisting of Cu, Fe, V, W and Mo or precursor thereof which is a water-insoluble, powdery compound which will be converted into catalytic material when calcined and,
(c) a powdery carrier material which is at least one oxide of a metal selected from the group consisting of Ti and Al or a precursor which is a water-insoluble, powdery compound which will be converted into the oxide when calcined,
thereby forming a stock material containing solid components in an amount of 1 to 10% by weight with about 80 to 40 parts by weight of fibers in relation to 20 to 60 parts by weight of the total powdery material, forming the stock into a sheet by paper-making means and drying the sheet.
2. The method as claimed in claim 1 further comprising: immersing the sheet in an impregnating slurry or solution containing catalytically active agents, carrier materials, their precursors or a mixture of at least two of these; and drying the sheet.
TABLE 3______________________________________                         Adhesive                         strengthsRefractory oxides* PEO 8      (g)______________________________________a     5 parts silica              58b     5 parts alumina             19c     5 parts silica-alumina      64d     5 parts titania             45e     5 parts silica   0.5 parts  82f     5 parts alumina  0.5 parts  23g     5 parts silica-alumina                  0.5 parts  105h     5 parts titania  0.5 parts  62i     1 part silica-alumina       21j     10 parts silica-alumina     68k     50 parts silica-alumina     401     5 parts titania  0.01 parts 66m     5 parts titania  0.1 parts  79n     5 parts titania  5 parts    **o     5 parts titania  10 parts   **p     0.5 parts silica-alumina    9q                                 7r                                 <1s                                 1______________________________________ *Aerosil 2000, Aluminum Oxide C, Aerosil COK 84 and Titanium Oxide P25 were used as finely divided refractory oxides, silica, alumina, silicaalumina and titania, respectively. **The adhesive strength was too large to cause the tearing of the sheets.
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U.S. Classification 502/159, 264/122, 156/89.22, 502/182, 156/89.26, 502/527.2, 502/184, 502/242, 502/258, 502/263, 423/239.1, 422/180, 502/255, 502/244, 156/89.28, 502/247, 502/185, 156/292, 428/116, 502/527.14, 502/527.19, 423/213.2
International Classification B01D53/94, B01J35/04, B01J35/06, F01N3/28
Cooperative Classification B01D2255/20769, B01D2255/20707, B01D2255/9202, F01N2330/06, B01D2255/20776, B01D2251/2062, F01N3/2828, B01D2255/20738, B01D2255/20761, Y10T428/24149, B01D53/9418, B01J35/04, B01D2255/20723, B01J35/06
European Classification B01D53/94F2C2, B01J35/06, F01N3/28B4B, B01J35/04
Owner name: SAKAI CHEMICAL INDUSTRY CO., LTD., 1, EBISUJIMA-CH
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:ABE KAZUNOBU;NAKATSUJI TADAO;REEL/FRAME:003841/0148