Metal-free H2S selective catalytic oxidation catalyst and preparation method thereof

A catalytic oxidation and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effect of low cost, rich pore structure, and multi-channel structure

Inactive Publication Date: 2018-11-13
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the invention is to solve the existing H 2 Problems existing in S selective catalytic oxidation catalysts, dedicated to developing a catalyst with simple preparation method and excellent catalytic performance

Method used

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  • Metal-free H2S selective catalytic oxidation catalyst and preparation method thereof
  • Metal-free H2S selective catalytic oxidation catalyst and preparation method thereof
  • Metal-free H2S selective catalytic oxidation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take an appropriate amount of glucose in a mortar, grind for 15-30 minutes, sieve with a standard sieve to obtain glucose below 120 mesh, and record it as raw material A; take an appropriate amount of melamine in a mortar, grind for 15-30 minutes, and use Standard sieve sieves and obtains 120 mesh melamine, which is recorded as raw material B. Take by weighing raw material A with an analytical balance to be 1g, take by weighing raw material B to be 35g, raw material A and B are fully mixed in the mortar by the mass ratio of 1:35, then the mixed mixture is packed in the ball mill jar of 100ml, Put the agate grinding balls into the ball milling tank according to the mass ratio of large balls accounting for 20%, medium balls accounting for 50% and small balls accounting for 30%. At the speed of 230 rpm, grind clockwise for 30 minutes, then press counterclockwise Orientation ball mill for 30 minutes. After the ball milling is over, put the mixture in the ball mill jar into...

Embodiment 2

[0034] Embodiment 2 (best embodiment):

[0035] Take an appropriate amount of chitosan in a mortar, grind for 15-30 minutes, and sieve with a standard sieve to obtain chitosan below 120 mesh, which is recorded as raw material A; take an appropriate amount of dicyandiamide in a mortar, grind After 15 to 30 minutes, sieve with a standard sieve to obtain 130 mesh dicyandiamide, which is recorded as raw material B. Take by weighing raw material A with an analytical balance to be 1g, take by weighing raw material B to be 35g, raw material A and B are fully mixed in the mortar by the mass ratio of 1:35, then the mixed mixture is packed in the ball mill jar of 100ml, Put the agate grinding balls into the ball milling tank according to the mass ratio of large balls accounting for 20%, medium balls accounting for 50% and small balls accounting for 30%. At the speed of 230 rpm, grind clockwise for 40 minutes, then press counterclockwise Orientation ball mill for 40 minutes. After the ...

Embodiment 3

[0037] Take an appropriate amount of sucrose in a mortar, grind for 15 to 30 minutes, sieve with a standard sieve to obtain sucrose below 120 mesh, and record it as raw material A; take an appropriate amount of urea in a mortar, grind for 15 to 30 minutes, and use Standard sieve sieves to obtain 140 mesh urea, which is recorded as raw material B. Take by weighing raw material A with an analytical balance to be 1g, take by weighing raw material B to be 35g, raw material A and B are fully mixed in the mortar by the mass ratio of 1:35, then the mixed mixture is packed in the ball mill jar of 100ml, Put the agate grinding balls into the ball mill jar according to the mass ratio of large balls accounting for 20%, medium balls accounting for 50% and small balls accounting for 30%. At the speed of 230 rpm, grind clockwise for 50 minutes, then press counterclockwise Orientation ball mill for 50 minutes. After the ball milling is over, put the mixture in the ball mill jar into a ceram...

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Abstract

The invention discloses a metal-free H2S selective catalytic oxidation catalyst and a preparation method thereof. A target catalyst can be obtained by taking green and pollution-free sugar as a main carbon source, pretreating by using a simple mechanical mixing method, and putting a mixture into a tubular furnace with an inert atmosphere for slow roasting. In addition, the catalyst shows the characteristics of high activity and high stability in the test of H2S selective catalytic oxidation performance. The preparation method of the catalyst disclosed by the invention has the advantages of simplicity, low cost, easiness in raw material obtaining, easiness in operation and broad application prospect.

Description

technical field [0001] The invention relates to a preparation method of a porous nano-carbon material using carbohydrates as raw materials, in particular to a novel metal-free H 2 The preparation of S selective oxidation catalyst and its application method, the method can realize H at the same time 2 S gas removal and sulfur recovery and reuse. Background technique [0002] h 2 As one of the main pollutants in the atmosphere, S is a highly irritating and highly toxic gas. Under aerobic and humid heat conditions, it will not only cause equipment and pipeline corrosion, catalyst poisoning, but also seriously threaten personal safety. With the development of the economy and the enhancement of people's awareness of environmental protection, the desulfurization of tail gas has attracted more and more attention. At the same time, the country has also formulated corresponding laws and regulations, and the H 2 S emissions are strictly limited. Hydrogen sulfide is a by-product o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/00B01J35/02B01J35/10B01J37/08C01B17/04B01D53/52B01D53/86
CPCB01D53/8612B01J27/24B01J35/002B01J35/023B01J35/1023B01J35/1028B01J35/1038B01J35/1057B01J35/1061B01J37/0036B01J37/082C01B17/0426
Inventor 江莉龙陈孝平刘福建曹彦宁沈丽娟
Owner FUZHOU UNIV
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