Novel preparation method of amorphous alloy catalyst

A technology of amorphous alloy and catalyst, which is applied in the field of preparation of amorphous alloy catalyst, can solve the problems of poor repeatability, high preparation cost, low yield of amorphous alloy catalyst and the like

Inactive Publication Date: 2007-08-01
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technologies for preparing non-supported amorphous alloys, the chemical reduction method generally needs to be carried out at low temperature and under the protection of inert gas, and the rep

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  • Novel preparation method of amorphous alloy catalyst
  • Novel preparation method of amorphous alloy catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～19

[0029] These examples illustrate the preparation of unsupported NiB amorphous alloy catalysts.

[0030] Configure three parts of mixed solutions of 0.1mol / L nickel sulfate and ethylenediamine respectively, A1 is Ni: ethylenediamine=1:0.5, A2 is Ni:ethylenediamine=1:1.5, A3 is Ni:ethylenediamine= 1:2.0, then add NaOH to adjust the pH to 12.0, 13.2 and 13.9 respectively, add KBH 4solution (B:Ni=2.0, atomic ratio), adding AgNO at 60 °C 3 solution (Ag accounts for 1% by weight of the catalyst), stirred and reacted until no bubbles are generated; after the catalyst is washed to be neutral, it can be stored in water or in ethanol. The XRD of samples A1-A3 have the characteristics of FIG. 1 . The TEM image of sample A2 has the characteristics of FIG. 2 .

[0031] Same as the preparation process of catalyst A1, change the main salt of nickel sulfate to nickel nitrate, nickel chloride and nickel acetate and keep the metal salt concentration constant to obtain catalysts A4-A6.

[00...

Embodiment 20～34

[0039] These examples illustrate the preparation of unsupported CoB amorphous alloy catalysts.

[0040] Configure three parts of mixed solutions of 0.1mol / L cobalt chloride and potassium sodium tartrate respectively, B1 is Co: potassium sodium tartrate=1:0.1, B2 is Ni: potassium sodium tartrate=1:1.0, B3 is Ni: potassium sodium tartrate =1:2.0, then add NaOH to adjust the pH to 13.0, 13.5 and 13.9 respectively, add KBH 4 solution (B:Co=2.0, atomic ratio), adding AgNO at 50 °C 3 solution (Ag accounts for 1% by weight of the catalyst), stirred and reacted until no bubbles are generated; after the catalyst is washed to be neutral, it can be stored in water or in ethanol. The XRDs of samples B1-B3 have the characteristics of FIG. 1 .

[0041] Same as the preparation process of the catalyst B2, the main salt cobalt chloride was changed to cobalt sulfate to obtain the catalyst B4.

[0042] Same as the preparation process of catalyst B2, potassium sodium tartrate was changed into ...

Embodiment 35～49

[0049] These examples illustrate the preparation of unsupported NiCoB amorphous alloy catalysts.

[0050] Dissolve the soluble nickel salt in ethylenediamine solution (nickel concentration is 0.1mol / L, Ni: ethylenediamine=1.5, atomic ratio), and then add a certain amount of potassium sodium tartrate solution of cobalt chloride (Co: potassium sodium tartrate =0.5, atomic ratio), control Co:Ni=0.5 (atomic ratio), drop NaOH solution to control pH to be 13.2, add KBH 4 solution (B:(Ni+Co)=2.0, atomic ratio), adding AgNO at 60°C 3 solution (Ag accounts for 1% by weight of the catalyst), stirred and reacted until no bubbles are generated; after the catalyst is washed to be neutral, it can be stored in water or in ethanol. The XRD of sample C1 has the characteristics of FIG. 1 .

[0051] Same as the preparation process of catalyst C1, changing the atomic ratio of Ni:ethylenediamine to 0.5 and 2.0 to obtain catalysts C2 and C3.

[0052] Same as the preparation process of the cataly...

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Abstract

The invention involves a new preparation method for amorphous alloy catalyst, it uses KBH4 as reductant, mixes one or two of nickel sulfate, nickel acetate, nickel nitrate, nickel chloride, cobalt sulfate or cobalt chloride into main salt and dissolves them into solution of ethylenediamine, tartaric acid or tartrate, prepares non-load or load amorphous alloy catalyst using oxidant, molecular sieve and high polymer as the carrier. The amorphous alloy catalyst prepared through the invention has characteristics of small dimension of active components, good dispersion degree, high yield of catalyst and high catalyst activity, and it applies to catalyzing hydrogenation and hydrogenation dechlorination reaction.

Description

technical field [0001] The invention relates to a method for preparing an amorphous alloy catalyst, more specifically a method for preparing NiB, CoB and NiCoB amorphous alloy catalysts. Background technique [0002] Since 1980, Smith proposed the use of amorphous alloys as catalysts for the first time at the Seventh International Conference on Catalysis. So far, amorphous alloy catalysts are still the focus and hotspot of catalytic researchers. In 2005, the "Innovation and Integration of Amorphous Alloy Catalyst and Magnetically Stabilized Bed Reaction Process" project developed by China Petroleum Science Research Institute won the only first prize of the National Technology Invention Award, and the industrial application of amorphous alloy catalyst has been widely recognized. [0003] CN 1093003C, CN 1191231C, CN 1541763A, CN 1557545A and CN 1666816A etc. disclose the use of KBH 4 A method for preparing non-supported NiB, CoB, NiMB, CoMB (M is Sn, Fe, Zn, etc.) amorphou...

Claims

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Application Information

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IPC IPC(8): B01J23/89C07C1/26C07B35/06C07D333/48
Inventor 张明慧李伟吴志杰陶克毅
Owner NANKAI UNIV
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