Tin-manganese-titanium catalyst, and preparation method and application method thereof

An application method and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., to achieve the effects of low energy consumption, high resistance to chlorine poisoning, and good catalytic activity

Inactive Publication Date: 2013-10-23
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Finocchio et al. considered that MnO x -TiO 2 The catalyst is only suitable for the elimination of nitrogen oxides and volatile organic pollutants without chlorine

Method used

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  • Tin-manganese-titanium catalyst, and preparation method and application method thereof
  • Tin-manganese-titanium catalyst, and preparation method and application method thereof
  • Tin-manganese-titanium catalyst, and preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation method of tin-manganese-titanium catalyst comprises the following steps:

[0046] 1) Weigh Mn(NO 3 ) 2 and Ti(SO 4 ) 2 , according to Mn(NO 3 ) 2 and Ti(SO 4 ) 2 The sum of the amount of substance and SnCl 2 2H 2 The ratio of the amount of O to substance is 1.00:0.01 to weigh SnCl 2 2H 2 O;

[0047] The precursor SnCl of each component of the catalyst that weighed 2 2H 2 O, Mn(NO 3 ) 2 and Ti(SO 4 ) 2 Dissolve in an appropriate amount of ultrapure water (the quality of ultrapure water in this embodiment is the precursor SnCl 2 2H 2 O, Mn(NO 3 ) 2 and Ti(SO 4 ) 2 10 times the total mass), then add precipitant urea and dispersant polyethylene glycol to the aqueous solution of the precursor, the amount of urea added is to precipitate all Ti 4+ , Mn 2+ , Sn 2+ 5 times the amount of urea required for ions; the mass of polyethylene glycol is the precursor SnCl 2 2H 2 O, Mn(NO 3 ) 2 and Ti(SO 4 ) 2 0.5 times the total mass; put th...

Embodiment 2

[0054] The preparation method of tin-manganese-titanium catalyst comprises the following steps:

[0055] 1) Weigh Mn(NO 3 ) 2 and Ti(SO 4 ) 2 , according to Mn(NO 3 ) 2 and Ti(SO 4 ) 2 The sum of the amount of substance and SnCl 2 2H 2 The ratio of the amount of O to substance is 1:2 to weigh SnCl 2 2H 2 O;

[0056] The precursor SnCl of each component of the catalyst that weighed 2 2H 2 O, Mn(NO 3 ) 2 and Ti(SO 4 ) 2 Dissolve in an appropriate amount of ultrapure water, then add precipitant urea and dispersant polyethylene glycol to the aqueous solution of the precursor, the amount of urea added is to precipitate all Ti 4+ , Mn 2+ , Sn 2+ 25 times the amount of urea required for ions; the mass of polyethylene glycol is the precursor SnCl 2 2H 2 O, Mn(NO 3 ) 2 and Ti(SO 4 ) 2 0.2 times the total mass; put the above-mentioned prepared solution in a water bath, fully stir at 70°C for 5 h, the pH of the solution rises slowly, and a brown precipitate and m...

Embodiment 3

[0063] The preparation method of tin-manganese-titanium catalyst comprises the following steps:

[0064] 1) Weigh Mn(NO 3 ) 2 and Ti(SO 4 ) 2 , according to Mn(NO 3 ) 2 and Ti(SO 4 ) 2 The sum of the amount of substance and SnCl 2 2H 2 The ratio of the amount of O to substance is 10:1 and weighed SnCl 2 2H 2 O;

[0065] The precursor Mn(NO 3 ) 2 and Ti(SO 4 ) 2 Dissolve in an appropriate amount of ultrapure water, then add precipitant urea and dispersant polyethylene glycol to the aqueous solution of the precursor, the amount of urea added is to precipitate all Ti 4+ , Mn 2+ , Sn 2+ 23 times the amount of urea required by the ion; polyethylene glycol is added in an appropriate amount according to the volume of the solution. Put the above prepared solution in a water bath, fully stir at 90°C for 10 h, the pH of the solution rises slowly, and a brown precipitate and mother liquor are obtained;

[0066] 2) Continue to age the brown precipitate in the mother liq...

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Abstract

The invention discloses a tin-manganese-titanium catalyst. A preparation method of the tin-manganese-titanium catalyst comprises the following steps: 1) adding a precipitating agent and a dispersant into an aqueous solution of a mixture of SnCl2-H2O(1/2), Mn(NO3)2 and Ti(SO4)2, and fully stirring at 20 DEG C-90 DEG C for 5 h-15 h to obtain a brown deposition and a mother liquor; 2) continuing aging the deposition in the mother liquor for 0.5 h-2 h, filtering and washing the filtrate to be neutral with water, drying the deposition, and roasting in air to obtain the tin-manganese-titanium composite oxide catalyst. The catalyst has the advantages of being low in raw material cost, simple in preparation technology, low in energy consumption, low in temperature of eliminating aryl chlorides, high in efficiency, free in secondary pollution, long in service life, strong in anti-positioning capability and the like, and is extremely suitable for complete catalytic combustion of volatile aryl chlorides atmosphere pollutants in low temperature.

Description

technical field [0001] The invention relates to a tin-manganese-titanium catalyst, a preparation method and an application method thereof, and belongs to the field of gas purification treatment. Background technique [0002] Chlorinated Volatile Organic Compounds (CVOCs) refer to chlorine-containing organic compounds that are volatile at room temperature and have a boiling point between 50°C and 260°C, and most CVOCs have good chemical and thermal stability , are difficult to decompose or be biodegraded, and become a class of persistent organic pollutants that are difficult to deal with in environmental pollution control. [0003] Most of CVOCs contain a stable benzene ring structure, and the aromatic ring contains chlorine atoms replacing hydrogen. It is difficult to effectively eliminate low-concentration CVOCs by direct incineration and biodegradation methods commonly used in industry, and may also produce toxic intermediates and The by-product is the precursor of the hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01D53/86B01D53/70B01D53/56
CPCY02A50/20
Inventor 刘善堂李经纬
Owner WUHAN INSTITUTE OF TECHNOLOGY
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