Process for preparation of catalyst for cleaning exhaust gases and catalyst prepared by the process

Patent · Tue May 15 00:00:00 EDT 1984

OSTI ID:6188365

Ono, T; Tsuchitani, K; Yamauchi, S; Yonehara, K

A process for preparing a catalyst for cleaning exhaust gases comprising a refractory carrier composed mainly of alumina and having deposited thereon, iron oxide, cerium oxide and at least one noble metal element, which comprises impregnating said carrier with an aqueous solution A prepared by adding aqueous ammonia to an aqueous solution containing a water-soluble iron salt as a material for iron and a cerium salt of an organic acid as a material for cerium to adjust the pH of the aqueous solution to 6.0-9.0, and optionally adding an ammonium salt of an organic acid, and an aqueous solution B containing a compound of the noble metal element.

• Assignee: Nippon Shokubai Kagaki Kogyo Co., Ltd (Japan)
• Patent Number(s): US 4448895
• OSTI ID: 6188365
• Resource Relation: Patent Priority Date: Priority date 11 Nov 1981, Japan; Other Information: PAT-APPL-439191
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
42 ENGINEERING
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
EXHAUST GASES
CLEANING
AIR POLLUTION CONTROL
ALUMINIUM OXIDES
AQUEOUS SOLUTIONS
CERIUM OXIDES
IRON OXIDES
REFRACTORY METALS
ALLOYS
ALUMINIUM COMPOUNDS
CERIUM COMPOUNDS
CHALCOGENIDES
CONTROL
DISPERSIONS
ELEMENTS
FLUIDS
GASEOUS WASTES
GASES
IRON COMPOUNDS
METALS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
RARE EARTH COMPOUNDS
SOLUTIONS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
WASTES
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
424000 - Engineering- Pollution Control Equipment- (1980-1989)