Method for measuring content of free carbon in molybdenum carbide

A detection method and technology for free carbon, applied in the field of chemical analysis, can solve the problems of inability to evaluate the total free carbon content of molybdenum carbide catalysts, difficulty in detecting free carbon in molybdenum carbide, and difficulty in free carbon content, etc., and achieve low cost and small pore size. , The effect of easy filtration and separation
CN103512822AInactive Publication Date: 2014-01-15NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
Publication Date
2014-01-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for measuring the content of free carbon in molybdenum carbide. The method comprises the following steps: (1) adding molybdenum carbide powder into nitro-hydrochloric acid and stirring to dissolve molybdenum carbide in nitro-hydrochloric acid and allowing free carbon to disperse in an undissolved state in nitro-hydrochloric acid, the mass and unit of the molybdenum carbide powder being m0 and g respectively; (2) performing first drying treatment on filter paper, the mass and unit of the filter paper subjected to first drying treatment being m1 and g respectively; the filter paper being binder-free glass fiber filter paper; (3) performing filtration treatment on nitro-hydrochloric acid using filter paper, performing secondary drying treatment after washing with deionized water, and the mass and unit of the filter paper subjected to secondary drying treatment being m2 and g; (4) calculating the mass percentage content x of free carbon in the molybdenum carbide powder. The content of free carbon is detected and analyzed using nitro-hydrochloric acid and binder-free glass fiber filter paper. The design is reasonable, the operation is convenient and easy, the detection error is less, and the result accuracy is high.
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Description

technical field

[0001] The invention belongs to the technical field of chemical analysis, in particular to a method for detecting free carbon content in molybdenum carbide. Background technique

[0002] Molybdenum carbide (Mo 2 C) Belonging to transition metal carbides, it is a group of mesenchymal compounds with metallic properties formed by carbon entering the transition metal lattice. Studies have shown that this kind of material has good catalytic activity and selectivity for hydrofining, desulfurization and denitrogenation of oil products, and is a new catalytic material with great application prospects. The electronic properties of molybdenum are close to those of platinum group metals, resulting in the catalytic performance of molybdenum carbide similar to that of platinum group metals. Molybdenum carbides have some properties of noble metals, especially molybdenum carbides are cheaper than noble metals, and have excellent resistance to sulfur poisoning, so molybden...

Claims

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