Catalyst for decomposing hydrogen sulfide containing modified carbon nanotubes, preparation method and application thereof
A technology of carbon nanotubes and catalysts, applied in the field of catalysts for decomposing hydrogen sulfide and its preparation, can solve the problems of unstable conversion rate of hydrogen sulfide and low conversion rate of hydrogen sulfide, and achieve simple operation, low preparation cost and high hydrogen sulfide conversion rate effect
Active Publication Date: 2022-02-11
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0009] The purpose of the present invention is to overcome the defects that the conversion rate of hydrogen sulfide is not high and the conversion rate of hydrogen sulfide is not stable in the catalyst that catalyzes the decomposition of hydrogen sulfide to generate elemental sulfur and hydrogen provided by the prior art, and provides a new modified Catalyst for decomposing hydrogen sulfide by carbon nanotubes
Method used
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preparation example 1
[0064] This preparation example uses the same method as Example 1 disclosed in CN1486927A to prepare modified carbon nanotubes. And named modified carbon nanotube A, wherein the carbon nanotube raw material was purchased from Beijing Deke Daojin Technology Co., Ltd.
preparation example 2
[0066] This preparation example uses the same method as Example 2 disclosed in CN1486927A to prepare modified carbon nanotubes. And named modified carbon nanotube B, wherein the carbon nanotube raw material was purchased from Beijing Deke Daojin Technology Co., Ltd.
Embodiment 1
[0068] Add 2.5g of modified carbon nanotube A, 0.3g of TiCl to 200mL of DMF 4 , 0.5g of alumina and 0.6g of chromium nitrate (anhydrous), stirred at 40°C for 6h, then dried in a drying oven at 100°C for 8h, and calcined at 260°C for 2h to obtain catalyst Cat1.
[0069] Results The composition of Cat1 is: based on the total weight of the catalyst, the total content of Ti and Cr as oxides is 14.2% by weight, and the element content weight ratio of Ti and Cr is 1:3.87, and the content of alumina is 14.1% by weight , and the balance is modified carbon nanotubes.
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The invention relates to the field of hydrogen sulfide decomposition, and discloses a catalyst for decomposing hydrogen sulfide containing modified carbon nanotubes and its preparation method and application. The catalyst contains a carrier and an active metal component loaded on the carrier. The carrier Contains modified carbon nanotubes, based on the total weight of the catalyst, the content of the modified carbon nanotubes is 5-90% by weight, and the content of the active metal component in terms of oxides is 1-50% by weight %, the modified carbon nanotubes are carbon nanotubes grafted by hyperbranched polymers, and the hyperbranched polymers contain terminal hydroxyl groups or terminal amino groups. When the catalyst provided by the invention is used to decompose hydrogen sulfide into elemental sulfur and hydrogen, it can have a higher conversion rate of hydrogen sulfide than the catalyst provided by the prior art.
Description
technical field [0001] The invention relates to the field of hydrogen sulfide decomposition, in particular to a catalyst for decomposing hydrogen sulfide containing modified carbon nanotubes, a preparation method and application thereof. Background technique [0002] Hydrogen sulfide (H 2 S) is a highly toxic and foul-smelling acid gas, which not only causes corrosion of metals and other materials, but also easily leads to catalyst poisoning and deactivation in chemical production; in addition, hydrogen sulfide can also endanger human health and cause environmental pollution. Therefore, the harmless treatment of a large amount of hydrogen sulfide gas produced in industrial fields such as oil, natural gas, coal and mineral processing needs to be solved urgently, no matter in terms of process requirements, equipment maintenance or environmental protection requirements. [0003] At present, the Claus method is commonly used in industry to treat hydrogen sulfide, and the method...
Claims
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IPC IPC(8): B01J23/06B01J23/26B01J23/28B01J23/30B01J23/34B01J23/75B01J23/755C01B3/04C01B17/04B01D53/52B01D53/86
CPCB01J23/002B01J23/26B01J23/34B01J23/28B01J23/30B01J23/755B01J23/75B01J23/06C01B3/04C01B17/0495B01D53/8612C01B2203/0277C01B2203/0861C01B2203/1041B01J2523/00B01J2523/31B01J2523/47B01J2523/67B01J2523/48B01J2523/72B01J2523/41B01J2523/68B01J2523/69B01J2523/847Y02E60/36
Inventor 牟善军张婧任君朋张铁孙峰徐伟石宁
Owner CHINA PETROLEUM & CHEM CORP