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Carbon monoxide adsorbent, preparation method and applications thereof

A carbon monoxide and adsorbent technology, applied in the field of chemistry, can solve the problems of low CO purification, unstable cuprous ion, complex refrigeration system, etc., and achieve the effects of good adsorption performance, good adsorption effect, and simple preparation process.

Inactive Publication Date: 2020-01-07
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Among them, the recovery system and refrigeration system of the cryogenic separation method are complex, which makes the energy consumption of the process high, and the cuproammonia liquid adsorption method also has the disadvantages of low purification of purified CO and instability of cuprous ions.
[0003] In the prior art, as described in "Proceedings of the Fifth National Chemical Engineering and Biochemical Annual Conference, Cu(I) Solid Phase Ion Exchange HSAPO-5 Molecular Sieve's CO Adsorption Performance", the ratio is much higher than that of a single layer After ion exchange under the dispersion capacity, high temperature vacuum treatment is required to obtain the adsorbent. The maximum CO adsorption capacity of the obtained adsorbent is <0.7mmol / g; not only the operation is cumbersome, energy-consuming, but the adsorption capacity is not high

Method used

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  • Carbon monoxide adsorbent, preparation method and applications thereof
  • Carbon monoxide adsorbent, preparation method and applications thereof

Examples

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Effect test

Embodiment 1

[0058] First, 25g SAPO-34 molecular sieve and 7.5g CuCl were ground for 5h under anhydrous and oxygen-free conditions, and mixed thoroughly; then in a tube furnace, under a nitrogen atmosphere, N 2 The flow rate was 200ml / min, and the adsorbent was obtained by roasting at 350°C for 4 hours. At 25°C, the carbon monoxide gas pressure was 1bar, and the measured carbon monoxide adsorption capacity was 0.93mmol / g.

Embodiment 2

[0060] Firstly, 25g SAPO-34 molecular sieve and 15g CuCl were ground for 12h under anhydrous and oxygen-free conditions, and mixed thoroughly; then in a tube furnace, under a nitrogen atmosphere, N 2 The flow rate is 200ml / min, and the adsorbent is obtained by roasting at 350°C for 4h. At 25°C, the carbon monoxide gas pressure is 1bar, and the measured carbon monoxide adsorption capacity is 0.95mmol / g.

Embodiment 3

[0062] First, 25g SAPO-34 molecular sieve and 7.5g CuCl were ground for 12h under anhydrous and oxygen-free conditions, and mixed thoroughly; then in a tube furnace, under a nitrogen atmosphere, N 2 The flow rate is 200ml / min, and the adsorbent is obtained by roasting at 450°C for 4h. At 25°C, the carbon monoxide gas pressure is 1bar, and the measured carbon monoxide adsorption capacity is 1.25mmol / g.

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Abstract

The invention discloses a carbon monoxide adsorbent, a preparation method and applications thereof, wherein the carbon monoxide adsorbent comprises a carrier and a cuprous compound, and the carrier isa silicoaluminophosphate molecular sieve. According to the invention, the adsorbent is simple in preparation process and high in adsorption capacity, and has good industrial application prospect.

Description

technical field [0001] The application relates to a carbon monoxide adsorbent and its preparation method and application, belonging to the field of chemistry. Background technique [0002] Carbon monoxide is an important basic chemical raw material, widely used in chemical industry, petroleum, natural gas, as well as steel plants, power stations, metal mines, etc. CO can not only be used as gas fuel, but also can be used to smelt metals. In industry, CO is commonly used to reduce iron oxide to smelt pig iron. It can also be used as raw material gas for synthesizing methanol, vinyl acetate, methyl formate, etc. CO exists in metallurgy, chemistry, graphite electrode manufacturing, household gas or coal stoves, and automobile exhaust. At present, the main separation methods of CO include cryogenic separation, cuproammonia liquid absorption, membrane separation and solid adsorption separation. Among them, the recovery system and refrigeration system of the cryogenic separatio...

Claims

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Application Information

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IPC IPC(8): B01J20/18B01J20/30B01D53/02
CPCB01D53/02B01D2257/502B01J20/0237B01J20/18
Inventor 吴雅琪徐云鹏刘中民
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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