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Propane complete catalytic oxidizer of tricobalt tetroxide and its preparation method and application

A technology of tricobalt tetroxide and an oxidizing agent, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of high cost and difficult practical application, and achieve simple preparation, The effect of high reactivity

Inactive Publication Date: 2016-07-20
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used catalysts are composite oxides derived from perovskite, spinel, and hydrotalcite. Although noble metal platinum and palladium catalysts have high catalytic activity, they are expensive and difficult to apply in practice.

Method used

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  • Propane complete catalytic oxidizer of tricobalt tetroxide and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh 2.12g of Na 2 CO 3 Dissolve in 20mL deionized water to prepare 1mol / L Na 2 CO 3 Solution; Weigh 5.82g of Co(NO 3 ) 2 ·6H 2 Dissolve O in 20mL deionized water to prepare 1mol / L cobalt solution; drop the cobalt solution into the alkali solution drop by drop, react in a water bath at 50°C for 1h, wash with deionized water until neutral, dry at 100°C, and bake at 300°C for 3 hours , get Co 3 o 4 -C.

Embodiment 2

[0017] Weigh 2.90mL of 25%NH 3 ·H 2 O, diluted to 2mol / LNH 3 ·H 2 O solution; Weigh 5.82g of Co(NO 3 ) 2 ·6H 2 Dissolve O in 20mL deionized water to prepare 1mol / L cobalt solution; drop the cobalt solution into the alkali solution drop by drop, react in a water bath at 50°C for 1 hour, wash with deionized water until neutral, dry at 100°C, and roast at 300°C for 3h , get Co 3 o 4 -N.

Embodiment 3

[0019] Weigh 1.60g of NaOH and dissolve it in 20mL deionized water to prepare a 2mol / L NaOH solution; weigh 5.82g of Co(NO 3 ) 2 ·6H 2 O was dissolved in 20mL deionized water to prepare a 1mol / L cobalt solution; the cobalt solution was dropped into the alkali solution drop by drop, reacted in a water bath at 50°C for 1h, washed with deionized water until neutral, dried at 100°C, and calcined at 300°C for 3h. Got Co 3 o 4 -O. After the pH meter detects that the solution is added dropwise, the pH value is 6.5, and tricobalt tetroxide is recorded as Co 3 o 4 -O-6.5.

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Abstract

The invention provides a propane full-catalytic oxidation agent of cobaltosic oxide as well as a preparation method and application of the oxidation agent. The preparation method comprises the following steps: dissolving a precipitator in deionized water to prepare a 1mpl / L or 2mol / L precipitator solution; dissolving soluble cobalt salt in the deionized water to prepare a 1mol / L cobalt solution; adding the cobalt solution into a stoichiometric alkali solution dropwise to react for 1-3 hours at the temperature of 20-80 DEG C, washing the solution with the deionized water to be neutral, drying the solution at the temperature of 60-100 DEG C and roasting the solution for 3-6 hours at the temperature of 300-500 DEG C to obtain the propane full-catalytic oxidation agent of cobaltosic oxide. The cobaltosic oxide catalyst is capable of achieving more than 90% of converstion under the conditions that raw material gas hourly space velocity is 100000mL<-1>cat<h-1> and the concentration of propane is 20ppm; the cobaltosic oxide catalyst can be applicable to full-catalytic oxidation reaction of all hydrocarbons such as C3H8, C3H6 and CH4 and is good in reaction activity.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a propane complete catalytic oxidizer of tricobalt monoxide and its preparation method and application. Background technique [0002] Motor vehicle exhaust (PM (particulate matter), CO, NO x and HC (hydrocarbons)) emissions are one of the main sources of air pollution in my country. Regarding the treatment of motor vehicle exhaust, it has aroused widespread concern in the society, and has also made good progress, but HC treatment is always a difficult problem to overcome. [0003] HC is mainly a product of incomplete fuel combustion in motor vehicle engines, which can irritate eyes, respiratory organs and skin, and some are even potential teratogenic and carcinogenic substances. Under strong sunlight, HC and NO x Photochemical reactions occur, which may lead to photochemical smog pollution, causing more serious impacts on human health and the ecological environment. In addi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75B01J27/24B01J27/20B01D53/72B01D53/86
Inventor 王丹赵昆峰高振源董亚梅王婷
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH