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A kind of ordered mesoporous tmco-alumina catalyst resistant to sulfur poisoning and preparation method thereof

A catalyst, alumina technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of low utilization rate of catalyst active components and dispersion of active components It can solve the problems of poor performance and thermal stability, etc., and achieve the effects of broad industrial application prospects and economic benefits, easy physical and chemical property parameters, and low catalytic oxidation temperature.

Active Publication Date: 2021-11-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The utilization rate of active components of the catalyst prepared by this method is low and the cost is high. At the same time, the solid solution of cerium, manganese and titanium is easy to sinter at high temperature. The specific surface area is reported in the patent from 267m 2 / g down to 20m at 700°C 2 / g, poor thermal stability
CN105289602A discloses a preparation method of a cerium-zirconium composite oxide-loaded perovskite catalyst with sulfur resistance, except that the perovskite La 1-x Sr x MnO 3 (x=0-0.5) As an active component, 0.01-1wt.% noble metal (one or more of Pt, Pd, Rh and Ru) is also introduced as an additive, and the noble metal additive is easily poisoned by sulfide , thereby reducing the reactivity of the catalyst
[0005] Due to the lack of targeted and effective design, the current catalytic oxidation catalysts in the prior art also have disadvantages such as poor dispersion of active components, high cost, and noble metals are easily poisoned by sulfides.

Method used

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  • A kind of ordered mesoporous tmco-alumina catalyst resistant to sulfur poisoning and preparation method thereof
  • A kind of ordered mesoporous tmco-alumina catalyst resistant to sulfur poisoning and preparation method thereof
  • A kind of ordered mesoporous tmco-alumina catalyst resistant to sulfur poisoning and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In the present embodiment, a binary transition metal composite oxide-alumina catalyst divided into MNCE is prepared, and the specific preparation method is:

[0039] First, 21 g of template P123 is dissolved in a beaker with 400 ml of methanol, and then 32 ml of concentrated nitric acid and 41 g of isopropanol aluminum, and stirring is continuously stirred for 30 minutes;

[0040] Second, 1.9 g of cerium chloride (CECL 3 · 7h 2 O) and 2.0 g of manganese chloride (MnCl 2 · 4h 2 O) The above solution is sequentially added and stirred;

[0041] Subsequently, the barrel is covered with a PET plastic film and tightened, and stirring is stirred for 10 hours;

[0042] The PET plastic film was removed and the beaker was placed in a vacuum drying tank, dried at 65 ° C for 16 hours;

[0043] Finally, the plastic solid in the beaker was taken out, placed in a muffle furnace, raised to 450 ° C at a temperature rise rate of 1.5 ° C / min and maintained for 3 hours, and the air in the mu...

Embodiment 2

[0048] In the present embodiment, the active component is prepared into a triple transition metal composite oxide-alumina catalyst of V-Fe-La, and the specific preparation method is:

[0049] The 32 g of template P123 was dissolved in a beaker in 400 ml of anhydrous ethanol, and 16 ml of concentrated hydrochloric acid and 49 g of isopropanol aluminum were added, and stirred and stirred for 30 minutes;

[0050] Second, 2.8 g ammonium is sourced (NH) 4 VO 3 ), 4.8 g of iron chloride (FECL 3 · 6h 2 O) and 5.2 g of mastinate in nitrate (LA (NO) 3 ) 3 · 6h 2 O) The above solution is sequentially added and stirred;

[0051] Subsequently, the barrel is covered with a PET plastic film and tightened, and stirring is stirred for 12 hours;

[0052] The PET plastic film was removed and the beaker was placed in a vacuum drying tank and dried at 70 ° C for 14 hours;

[0053] Finally, the plastic solid in the beaker was taken out, placed in a muffle furnace, raised to 550 ° C at a temperature ri...

Embodiment 3

[0059] In the present embodiment, the active component is prepared into a binary transition metal composite oxide-alumina catalyst of Co-La, and the specific preparation method is:

[0060] First, 16G template P123 is dissolved in a beaker in 400 ml of anhydrous ethanol, and 25 ml of phosphoric acid and 27 g of isopropanol are added, and the mixture is stirred and stirred for 30 minutes;

[0061] Second, 3.9 g of cobalt nitrate will be cobalt (CO (NO) 3 ) 3 · 6h 2 O) and 0.5 g of chloride (LaCl 3 · 7h 2 O) The above solution is sequentially added and stirred;

[0062] Subsequently, the barrel is covered with a PET plastic film and tightened, and stirring is stirred for 9 hours;

[0063] The PET plastic film was removed and the beaker was placed in a vacuum drying tank, dried at 70 ° C for 13 hours;

[0064] Finally, the plastic solid in the beaker was taken out, placed in a muffle furnace, warmed up to 450 ° C at 1 ° C / min, and maintained for 5 hours, and the air in the muffle f...

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Abstract

The invention discloses an ordered mesoporous TMCO-alumina catalyst resistant to sulfur poisoning and a preparation method thereof, belonging to the technical field of environmental protection. It uses transition metal composite oxide as the catalyst active component, aluminum isopropoxide as the aluminum source, and polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer as the template as the raw material Prepared. The preparation method firstly adds the template agent, aluminum isopropoxide and acid into a container containing a solvent and stirs until dissolved; adds the catalyst active component into the container and stirs; then seals the container and stirs at room temperature; Then open the mouth of the container, place it in an oven to dry; finally take out the solid dried in the oven, and then roast it. The invention adopts the "solvent volatilization-solute self-assembly" method to prepare an ordered mesoporous TMCO-alumina catalyst, and the prepared catalyst has high reactivity and strong resistance to sulfur poisoning.

Description

Technical field [0001] The present invention relates to the field of environmental protection, and more particularly to an ordered mesoporous TMCO-aluminum oxide catalyst of sulfur-toxic toxin and its preparation method thereof. Background technique [0002] Volatile Organic Compounds (VOCS) emitted by the petrochemical process, approximately 30% of the total amount, and the petrochemical industry has the characteristics of scale, integrated, continuous, promotion application VOCS centralized recycling or destruction. Technology has higher technical economy. In order to better control VOCS emissions, my country Environmental Protection Department promulgated the implementation of national standards for petrochemical industries in 2015, "Petroleum Refining Industrial Pollutant Emission Standards" and GB 31571-2015 "Petrochemical Industry Pollutant Emissions Standard ", requires VOCs emitted in the refinery, the treatment efficiency of non-methane total hydrocarbon is ≥97%, non-met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/22B01J23/34B01J23/83F23G7/07
CPCB01J23/002B01J23/22B01J23/34B01J23/83B01J35/1019B01J35/1061B01J2523/00F23G7/07B01J2523/3712B01J2523/72B01J2523/31B01J2523/3706B01J2523/55B01J2523/842B01J2523/845B01J2523/67
Inventor 刘欢赵宇鑫单晓雯程龙军尹树孟刘全桢
Owner CHINA PETROLEUM & CHEM CORP
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