Method for catalyzing hydrogen production from formic acid

A formic acid and catalyst technology, which is applied in the field of hydrogen production from formic acid catalyzed by noble metal Pd-supported catalysts, can solve the problems of low hydrogen production activity and achieve high catalytic efficiency, good economic and environmental benefits, and improved dispersion

Active Publication Date: 2018-10-19
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the pure carbon material supported Pd as a catalyst has low activity for the hydrogen production of formic acid

Method used

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  • Method for catalyzing hydrogen production from formic acid
  • Method for catalyzing hydrogen production from formic acid
  • Method for catalyzing hydrogen production from formic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Synthesize CTF

[0034] 1) 1.596g of anhydrous zinc chloride (stored in a glove box) and 0.3g of 1,4-terephthalonitrile were ground in a glove box, and the resulting powder was transferred to a quartz tube;

[0035] 2) Use a vacuum pump to vacuum to a degree of 10 -2 Pa, after sealing, heat to 300°C for 60 hours, continue heating to 450°C for 5 hours;

[0036] 3) The obtained black block material is washed repeatedly with distilled water and 1.0M HCl solution after crushing, for removing residual zinc chloride;

[0037] 4) Wash the obtained black powder with distilled water and tetrahydrofuran, and dry it under vacuum at 150°C overnight to obtain CTF-450.

[0038] Step 2: Loading precious metal Pd

[0039] 1) Add 0.15g of CTF-450 to 10ml of deionized water, then add appropriate amount of PdCl 2 solution, stirred for 3 hours and then washed with 1.0M Na 2 CO 3Adjust the pH to 10.5 and continue stirring for 2 hours;

[0040] 2) Wash the material with deioni...

Embodiment 2

[0049] Step 1: Synthesize CTF

[0050] 1) 0.9576g of anhydrous zinc chloride (stored in a glove box) and 0.3g of 1,4-terephthalonitrile were ground in a glove box, and the resulting powder was transferred to a quartz tube;

[0051] 2) Use a vacuum pump to vacuum to a degree of 10 -2 Pa, after sealing, heat to 300°C for 60 hours, continue heating to 550°C for 6 hours;

[0052] 3) The obtained black block material is washed repeatedly with distilled water and 1.0M HCl solution after crushing, for removing residual zinc chloride;

[0053] 4) Wash the obtained black powder with distilled water and tetrahydrofuran, and dry it under vacuum at 150°C overnight to obtain CTF-550.

[0054] Step 2: Loading precious metal Pd

[0055] 1) Add 0.15g of CTF-550 to 10ml of deionized water, then add appropriate amount of PdCl 2 solution, after stirring for 3 hours, adjust the pH to 11, and continue stirring for 2 hours;

[0056] 2) Wash the material with deionized water until neutral, and ...

Embodiment 3

[0061] Step 1: Synthesize CTF

[0062] 1) 0.319g of anhydrous zinc chloride (stored in a glove box) and 0.3g of 1,4-terephthalonitrile were ground in a glove box, and the resulting powder was transferred to a quartz tube;

[0063] 2) Use a vacuum pump to vacuum to a degree of 10 -2 Pa, after sealing, heat to 300°C for 60 hours, continue heating to 650°C for 4 hours;

[0064] 3) The obtained black block material is washed repeatedly with distilled water and 1.0M HCl solution after crushing, for removing residual zinc chloride;

[0065] 4) Wash the obtained black powder with distilled water and tetrahydrofuran, and dry it under vacuum at 150°C overnight to obtain CTF-650.

[0066] Step 2: Loading precious metal Pd

[0067] 1) Add 0.15g of CTF-650 to 10ml of deionized water, then add appropriate amount of PdCl 2 solution, after stirring for 3 hours, adjust the pH to 9, and continue stirring for 2 hours;

[0068] 2) Wash the material with deionized water until neutral, and dr...

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Abstract

The invention discloses a method for catalyzing hydrogen production from formic acid by using a palladium-based catalyst Pd/CTF. The method comprises the following steps: synthesizing a covalent triazine polymeric porous material (CTF) by an ionic thermal copolymerization method; loading precious metal Pd by a precipitation deposition method to obtain the catalyst Pd/CTF; adding the Pd/CTF into aformic acid solution, and catalyzing the hydrogen production from the formic acid at 298-328K. The prepared loaded palladium catalyst Pd/CTF adopts a suitable pore structure, the atomic proportion ofN element on the surface is 8.76-9.89%, and the diameter range of the Pd is 1.58-1.87nm. According to the method, a carbon nitrogen material CTF is used as a carrier of the Pd-based catalyst, so thaton one hand, the catalytic activity of the catalyst is significantly improved, and on the other hand, the charge structure on the surface of the noble metal is changed and production of a byproduct COis eliminated. By the method, the catalyst is easy to prepare, the operation is convenient, the catalytic efficiency is high, and the catalyst can be recycled.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production, and in particular relates to a method for producing hydrogen from formic acid catalyzed by a noble metal Pd supported catalyst. Background technique [0002] The demand for energy in the world today mainly depends on fossil fuels, but fossil fuels are non-renewable, and the use of fossil fuels has caused serious environmental problems, such as global warming, ozone layer destruction, acid rain, etc. Therefore, it is imminent to develop new sustainable energy sources (such as wind energy, solar energy, hydrogen energy, geothermal energy, etc.). Hydrogen energy is considered as a "mobile energy" that can meet human energy needs, especially when combined with fuel cell technology, hydrogen energy can provide efficient and clean energy for mobile devices, which has important practical significance. [0003] A major issue affecting the development of a sustainable hydrogen economy is the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/00C01B3/02B01J27/24
CPCB01J27/24B01J35/006B01J35/0066C01B3/0015C01B3/02Y02E60/32Y02P20/584
Inventor 许昭怡曹伍刚孙敬雅侯吉妃丁炅超郑寿荣瞿晓磊武安邦张玲翁昕
Owner NANJING UNIV
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