Zirconium dioxide catalyst supporting iron cobalt potassium, preparation method and application thereof

A technology of zirconium dioxide and iron cobalt potassium is applied in the application field of selective reduction of carbon dioxide to ethylene, can solve problems such as poor activity and low conversion rate, and achieves maintaining catalytic performance, good catalytic performance, excellent ethylene selectivity and The effect of carbon dioxide conversion

Active Publication Date: 2022-03-22
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the difficulty of commercial application of existing noble metal catalysts, non-noble metal catalysts CO 2 The problem of low conversion rate and poor activity, the present invention provides a high surface oxygen vacancy loaded iron cobalt potassium zirconia catalyst, preparation method and its application in selective catalytic reduction of carbon dioxide to ethylene

Method used

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  • Zirconium dioxide catalyst supporting iron cobalt potassium, preparation method and application thereof
  • Zirconium dioxide catalyst supporting iron cobalt potassium, preparation method and application thereof
  • Zirconium dioxide catalyst supporting iron cobalt potassium, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Fe 3.33 co 1.67 K 5 / ZrO 2 The catalyst was prepared by a one-step hydrothermal method, and Fe(NO 3 ) 3 9H 2 O, Co(NO 3 ) 3 ·6H 2 O. KNO 3 and ZrO 2 (The mass ratio is 5:2:5:100) were dissolved in deionized water together, and stirred for 12 hours to obtain a mixed precursor solution. Pour the mixed precursor solution into the reaction kettle, hydrothermally react at 140°C for 12h, centrifuge, and dry at 110°C to obtain Fe 3.33 co 1.67 K 5 / ZrO 2 catalyst.

Embodiment 2

[0031] Preparation of FeCoK with total Fe and Co loadings of 0, 1, 3, 5, 7, 9 wt% 5 / ZrO 2 catalyst. In the same method as in Example 1, different mass ratios of Fe(NO 3 ) 3 9H 2 O and Co(NO 3 ) 3 ·6H 2 O dissolved.

Embodiment 3

[0033]Preparation of FeCoK / ZrO with K loadings of 0, 1, 3, 5, 7, 10 wt% 2 catalyst. In the same way as in Example 1, change KNO 3 the dissolution quality.

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Abstract

The invention discloses a zirconium dioxide catalyst loaded with iron, cobalt and potassium, a preparation method and its application in selective catalytic reduction of carbon dioxide to produce ethylene. The method adopts a one-step hydrothermal method, and Fe salt, Co salt, K salt and ZrO 2 The mixed solution of the mixture is hydrothermally reacted at 120-160° C. to obtain a zirconia catalyst loaded with iron, cobalt and potassium. The zirconia catalyst of the present invention supports iron cobalt potassium, with ZrO 2 As a carrier, it provides high surface oxygen vacancies and promotes the CO 2 Conversion to CO, increasing CO 2 The conversion rate of iron, cobalt, potassium and zirconium dioxide is synergistically promoted, showing high catalytic activity, and the continuous reaction of 250h still maintains good catalytic performance and strong stability.

Description

technical field [0001] The invention belongs to the technical field of thermal catalytic reduction of carbon dioxide to produce ethylene, and relates to a zirconium dioxide catalyst loaded with iron, cobalt and potassium, a preparation method and its application in selective reduction of carbon dioxide to produce ethylene. Background technique [0002] Due to CO 2 The impact of global climate change, carbon dioxide utilization has become a research hotspot. In addition, CO 2 As an important carbon source, it can be converted into hydrocarbons on the catalyst through photocatalysis, electrocatalysis, and thermocatalysis. CO 2 Thermocatalytic hydrogenation to ethylene is an efficient and commercially viable route. Ethylene is one of the chemical products with the largest output in the world, and is the core of the petrochemical industry, accounting for more than 75% of petrochemical products, and occupies an important position in the national economy. At present, catalyst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78C07C1/12C07C11/04
CPCB01J23/78C07C1/12C07C2523/78C07C11/04Y02P20/52
Inventor 钟秦顾浩丁杰
Owner NANJING UNIV OF SCI & TECH
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