Catalyst for hydrogen production by self-heating reforming of methanol and preparation method thereof

An autothermal reforming and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. Complex problems such as improved catalytic activity and stability, good heat and mass transfer performance, and high catalyst utilization

An autothermal reforming and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. Complex problems such as improved catalytic activity and stability, good heat and mass transfer performance, and high catalyst utilization

CN101601997AInactive Publication Date: 2009-12-16HANERGY TECH
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  • Catalyst for hydrogen production by self-heating reforming of methanol and preparation method thereof
  • Catalyst for hydrogen production by self-heating reforming of methanol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] ZnO-Cr 2 o 3 / C 0.30 Zr 0.15 Y 0.025 La 0.025 al 0.5 o 2 Monolithic catalyst, the preparation method is as follows:

[0038] (1) Ce(NO with a molar ratio of 6:3:10 3 ) 3 ·6H 2 O, Zr(NO 3 ) 3 ·3H 2 O, Al(NO 3 ) 3 9H 2 O and 0.5% La(NO 3 ) 3 ·6H 2 O, Y (NO 3 ) 3 ·6H 2 O is dissolved in metered deionized water, and the two are configured into a solution with a concentration of 0.5mol / L; the industrial ammonia water with a concentration of 25% is diluted twice as a precipitant, and the above salt solution is added dropwise to the above precipitation under continuous stirring In the solution, control the pH=9. After the precipitation is complete, age at room temperature for 12 hours, wash twice with deionized water, replace the water in the obtained precipitate with absolute ethanol, supercritically dry, and roast at 800 ° C for 6 hours to obtain Ce 0.30 Zr 0.15 Y 0.025 La 0.025 al 0.5 o 2 Nano-cerium-zirconium-aluminum composite oxide support, cha...

Embodiment 2

[0042] ZnO-Cr 2 o 3 / C 0.193 Zr 0.032 Y 0.1 al 0.675 o 2 Monolithic catalyst, the preparation method is as follows:

[0043] (1) Ce(NO with a molar ratio of 6:1:21 3 ) 3 ·6H 2 O, Zr(NO 3 ) 3 ·3H 2 O, Al(NO 3 ) 3 9H 2 O and Y (NO 3 ) 3 ·6H 2 O is dissolved in metered deionized water, and the two are configured into a solution with a concentration of 0.5mol / L; the industrial ammonia water with a concentration of 25% is diluted twice as a precipitant, and the above salt solution is added dropwise to the above precipitation under continuous stirring In the solution, control the pH=8. After the precipitation is complete, age at room temperature for 12 hours, wash twice with deionized water, replace the water in the obtained precipitate with absolute ethanol, supercritically dry, and roast at 500 ° C for 5 hours to obtain Ce 0.193 Zr 0.032 Y 0.1 al 0.675 o 2 Nano-cerium-zirconium-aluminum composite oxide carrier, characterized by TEM, the particle diameter of t...

Embodiment 3

[0047] ZnO-Cr 2 o 3 / Pr 2 o 6 -Ce 0.102 Zr 0.611 Y 0.05 al 0.237 o 2 Monolithic catalyst, the preparation method is as follows:

[0048] (1) Ce(NO with a molar ratio of 3:18:7 3 ) 3 ·6H2 O, Zr(NO 3 ) 3 ·3H 2 O, Al(NO 3 ) 3 9H 2 O and Y (NO 3 ) 3 ·6H 2 O and 0.5% by weight of Pr(NO 3 ) 3 ·6H 2 O is dissolved in metered deionized water to form a solution with a concentration of 0.5mol / L; dilute industrial ammonia water with a concentration of 25% twice as a precipitant, and add the above salt solution dropwise to the precipitant under continuous stirring , control the pH=10, after the precipitation is complete, age at room temperature for 12 h, wash twice with deionized water, replace the water in the obtained precipitate with absolute ethanol, supercritically dry, and roast at 650 ° C for 2 h to obtain Pr 2 o 6 -Ce 0.102 Zr 0.611 Y 0.05 Al 0.237 o 2 Nano-cerium-zirconium-aluminum composite oxide carrier, characterized by TEM, the particle diameter of...

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Abstract

The invention discloses a catalyst for hydrogen production by self-heating reforming of methanol and a preparation method thereof, in particular relates to a catalyst for hydrogen production by self-heating reforming of methanol and using nanometer cerium, zirconium and aluminum composite oxide as a carrier and a preparation method thereof. The catalyst comprises transition metal composite oxide as an active ingredient, rare earth or / and alkaline earth metal oxide as a catalysis assistant, a porous material matrix and the nanometer cerium, zirconium and aluminum composite oxide as a carrier coating, wherein the mol ratio of Ce to Zr is 6:1-36, and the mol ratio of the sum of Ce and Zr to Al is 1-9:3; the coating amount of the nanometer cerium, zirconium and aluminum composite oxide is 10-70 percent of that of the porous material matrix by weight; and the particle diameter of the nanometer cerium, zirconium and aluminum composite oxide carrier is 5-20nm. The catalyst has the advantages of good activity, high strength, good heat stability, simple preparation technology and relatively low cost, does not need activation in advance before use, and can be repeatedly used without activity reduction.

Description

technical field [0001] The invention relates to a catalyst for hydrogen production by autothermal reforming of methanol and a preparation method thereof, in particular to a catalyst for hydrogen production by autothermal reforming of methanol with nano-cerium-zirconium-aluminum composite oxide as a carrier coating and a preparation method thereof. Background technique [0002] As countries around the world pay more and more attention to environmental pollution and energy crisis, the development of clean energy is getting more and more attention, especially the use of hydrogen energy as a new energy has become a research hotspot in various countries. In order to solve the storage, transportation, and refueling problems of hydrogen directly used as fuel, mobile hydrogen production technology has been extensively studied. Proton exchange membrane fuel cell (PEMFC) is most suitable as a mobile power source due to its low operating temperature, fast start-up, high operating curre...

Claims

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Application Information

Patent Timeline
16 Dec 2009
Publication
CN101601997A
IPC
B01J23/26; C01B3/32; H01M4/90
CPC
Y02E60/50
Inventors
肖钢; 喻瑶