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Method for preparing Ni base catalyst for methane portion oxidation synthesis gas

A catalyst and synthesis gas technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Distributor loss and other issues

Inactive Publication Date: 2010-04-14
WUXI RES INST OF APPLIED TECH TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of Ni-based catalysts in the partial oxidation of methane to synthesis gas still has problems such as catalyst deactivation caused by carbon deposition, Ni particle growth and component loss, which restricts the industrial application of Ni-based catalysts.

Method used

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  • Method for preparing Ni base catalyst for methane portion oxidation synthesis gas
  • Method for preparing Ni base catalyst for methane portion oxidation synthesis gas
  • Method for preparing Ni base catalyst for methane portion oxidation synthesis gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Ni / ZrO prepared by the above 1-2 steps 2 -0.1 g of HT-850-650 catalyst, carry out the partial oxidation reaction of methane according to the method described in step 3 above. V(CH 4 ) / V(O 2 ) = 2 reaction feed gas through the Ni / ZrO that has been reduced at 600°C at a flow rate of 165mL / min2 -HT-850-650 catalyst bed. The reaction tail gas flowing out from the reaction tube is analyzed by sampling at intervals of a certain period of time through the six-way valve, and the reaction is stopped after 78 hours of feeding the raw material gas. The result of embodiment 1 (the conversion rate of methane and product CO, H 2 selectivity) as shown in Table 1. Ni / ZrO after 78 hours of reaction 2 -The amount of carbon deposited on the HT-850-650 catalyst was analyzed by thermogravimetric (TG) method, and the results are listed in Table 7.

[0025] Table 1Ni / ZrO 2 -Results of partial oxidation of methane over HT-850-650 catalyst (reduction treatment at 600°C)

[0026]

Embodiment 2

[0028] Except using Ni / ZrO 2 -HT-850-850 catalyst replaces Ni / ZrO in embodiment 1 2 -except HT-850-650 catalyzer, other steps are with embodiment 1. The reaction results are shown in Table 2. Ni / ZrO after 78 hours of reaction 2 -The amount of carbon deposited on the HT-850-850 catalyst was analyzed by thermogravimetric (TG) method, and the results are listed in Table 7.

[0029] Table 2Ni / ZrO 2 -Results of partial oxidation of methane over HT-850-850 catalyst (reduction treatment at 600°C)

[0030]

Embodiment 3

[0032] Catalyst removal (Ni / ZrO 2 -HT-850-850) adopts the "600°C+900°C reduction" in the above step 3, and other steps are the same as in Example 2. The reaction results are shown in Table 3. Ni / ZrO after 78 hours of reaction 2 -The amount of carbon deposited on the HT-850-850 catalyst was analyzed by thermogravimetric (TG) method, and the results are listed in Table 7.

[0033] Table 3Ni / ZrO 2 -Results of partial oxidation of methane over HT-850-850 catalyst (reduction treatment at 600°C+900°C)

[0034]

[0035]

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Abstract

The invention relates to a method for preparing Ni base catalyst for methane portion oxidation synthesis gas, which belongs to the technical field of natural gas chemical industry. The method is characterized in that the method comprises adopting a water hot method to prepare the carrier ZrO2 of Ni base catalyst, and adopting high-temperature thermal treatment to prepare ZrO2 carrier. The ZrO2 is placed in a Muffle furnace, and the temperature reaches 850 DEG C in the temperature rise speed of 4 DEG C / min in air, the ZrO2 is roasted for 8h under the temperature, thereby getting high-temperature thermal-treatment ZrO2. Ni / ZrO2 prepared by the technical method is catalyst, and has excellent stability and carbon accumulation resistance property in methane portion oxidation synthesis gas. As comparison, a water hot method is used to prepare ZeO2, the prepared Ni / ZrO2 catalyst has unstable performance and is easy to accumulate carbon in the methane portion oxidation synthesis gas reaction, although the traditional precipitation method which is used to prepare ZrO2 catalyst conducts thermal treatment under given temperature, the prepared Ni / ZrO2 catalyst is also easy to accumulate carbon.

Description

technical field [0001] The invention relates to a method for the partial oxidation of methane to produce synthesis gas (CO and H 2 The preparation and processing method of the mixed gas) catalyst and the manufacturing method of synthesis gas belong to the technical field of natural gas chemical industry. Background technique [0002] With the reduction of oil resources, the development and utilization of natural gas has been widely concerned by scholars. However, it is difficult to directly synthesize high value-added products from natural gas. At present, the indirect method is mainly used, that is, first converting natural gas into synthesis gas, and then preparing high value-added products from the synthesis gas. The processes for converting natural gas into synthesis gas include steam reforming, carbon dioxide reforming and partial oxidation of methane. steam reforming and CO 2 Reforming is a highly endothermic process. In contrast, the partial oxidation of methane t...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J21/06C01B3/40
CPCY02P20/52
Inventor 贺德华刘树强刘会敏
Owner WUXI RES INST OF APPLIED TECH TSINGHUA UNIV
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