Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2000-02-16
2001-10-02
Wood, Elizabeth D. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C502S402000, C502S407000, C502S409000, C502S413000, C502S417000
Reexamination Certificate
active
06297187
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a method of making a catalyst for liquid hydrocarbon fuel. More particularly, it relates to a method of making a catalyst for liquid hydrocarbon fuel, which enhances combustion efficiency of fuel in internal-combustion engines, reduces an amount of incomplete combustion materials in exhaust gas, and improves performance of internal-combustion engines.
BACKGROUND ART
Hitherto, there has been serious problem in air pollution and harmful influence on the Earth environment derived from exhaust gas of internal-combustion engines, such as an automobile. In order to lighten the problem, many methods have been proposed, for example an improvement of a structure or combustion mode of internal-combustion engines, and employment of a filter, a removal of an impurity in fuel and the like. However, some of them have made a sacrifice of the performance of the internal-combustion engines. Then, as a method to clean exhaust gas while maintaining the performance of the internal-combustion engines, methods of reducing a content of incomplete combustion materials in the exhaust gas by improving the combustion efficiency of fuel have been proposed. The methods include an elevation of a combustion temperature of fuel, a removal of an impurity during a purification step of fuel, an increase of an octane number of fuels by an addition of additives or chemical reaction, and the like. However, the methods mentioned above generally make complicate productive facilities and manufacturing process, and are not practiced with ease and at low cost.
DISCLOSURE OF INVENTION
PROBLEM TO BE SOLVED BY THE INVENTION
A main object of the present invention is to provide a method of making a catalyst for liquid hydrocarbon fuel. The catalyst improves combustion efficiency of fuel for internal-combustion engines with ease and at low cost.
MEANS FOR SOLVING THE PROBLEM
The present inventors have intensively studied to attain the above mentioned object and have found that a resin or rubber composition containing specified amounts or carbon-containing powder and silicon dioxide-containing powder is press-molded to form a catalyst which can be prepared at low cost with ease and surprisingly increases a combustion efficiency of fuel in internal-combustion engines. Thus, the present invention has been completed.
The present invention relates to a method of making a catalyst for liquid hydrocarbon fuel comprising the steps of:
(a) preparing a resin or rubber composition comprising
(i) 100 parts by weight of a resin or rubber component;
(ii) 15 to 60 parts by weight of a carbon source having a particle size of not more than 0.5 mm and containing anthracite of not less than 62.5%;
(iii) 35 to 85 parts by weight of a silicon dioxide source having a particle size of not more than 0.5 mm and containing quartz sand of not less than 80 %; and
(iv) 5 to 15 parts by weight of glass fiber having an average fiber length of 6 to 12 &mgr;m;
(b) press molding the composition to obtain a molded article, and
(c) aging the molded article.
The present invention also relates to a method of making a catalyst for liquid hydrocarbon fuel comprising the steps of:
(a) preparing a resin or rubber composition comprising
(i) 100 parts by weight of a resin or rubber component;
(ii) 15 to 60 parts by weight of a carbon source having a particle size of not more than 0.5 mm and containing anthracite of not less than 62.5%;
(iii) 35 to 85 parts by weight of a silicon dioxide source having a particle size of not more than 0.5 mm and containing quartz sand of not less than 80%;
(iv) 5 to 15 parts by weight of glass fiber having an average fiber length of 6 to 12 &mgr;m; and
(v) 5 to 15 parts by weight of tungsten powder having a particle size of not more than 0.2 mm;
(b) press molding the composition to obtain a molded article, and
(c) aging the molded article.
REFERENCES:
patent: 5-212291 A (1993-08-01), None
patent: 9-248464 A (1997-09-01), None
patent: 9-290164 (1997-11-01), None
Merchant & Gould P.C.
Wood Elizabeth D.
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