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Molybdenum phosphide (MoP) prepared by hypophosphite precursor thermal decomposition method

A technology of hypophosphite and molybdenum phosphide, which is applied in the direction of phosphide, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems of difficult realization of programmed temperature reduction and high preparation temperature, and achieve low equipment cost and low price Effect of cheap, good HDS and HDN activity

Inactive Publication Date: 2010-01-13
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is a traditional method for preparing phosphide catalysts, this method needs to break the P-O bond in the phosphate during the preparation, thus requiring a higher preparation temperature (generally above 550°C)
Moreover, temperature-programmed reduction is also difficult to achieve in large-scale production.

Method used

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  • Molybdenum phosphide (MoP) prepared by hypophosphite precursor thermal decomposition method
  • Molybdenum phosphide (MoP) prepared by hypophosphite precursor thermal decomposition method
  • Molybdenum phosphide (MoP) prepared by hypophosphite precursor thermal decomposition method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] First, 7.33g of Na 2 MoO 4 .2H 2 O and 12.85 g NaH 2 PO 2 .H 2 O was added to 100ml deionized water respectively, and after dissolving for 10 minutes, the resulting solution was put into a petri dish and dried at 60°C. Then put the dried white precursor powder into the reactor, heat treatment at 300°C for 10min under the protection of static nitrogen, and then wash the obtained product with water and then dry it. The obtained sample is named A, and A has attached figure 1 Characteristics.

Embodiment 2

[0017] The preparation process is the same as that of sample A, only changing the NaH 2 PO 2 .H 2 The amount of O is 16.06g, and other conditions remain unchanged. The resulting sample is named B, and B has attached figure 2 Characteristics.

Embodiment 3

[0019] The preparation process is the same as that of sample A, only the heat treatment temperature is changed to 500°C, and other conditions remain unchanged. The obtained sample was named C, and C has attached image 3 Characteristics.

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Abstract

The invention provides a novel method for preparing loaded or unloaded molybdenum phosphide (MoP) by hypophosphite precursor thermal decomposition, the invention is characterized in that the process adopted is simple; complicated procedures like high temperature, high pressure, temperature programming and the like are not needed; loaded and unloaded molybdenum phosphide (MoP) can be prepared by simple heat treatment under normal pressure; the used raw materials are low in price and safe and the needed device is low in cost, thus being applicable to industrial production; the catalyst can be widely used in hydrotreating of oils, due to good HDS and HDN activities thereof.

Description

technical field [0001] The present invention proposes a new method for preparing supported or unsupported molybdenum phosphide (MoP) by thermal decomposition of hypophosphite precursor. The feature of the present invention is that the adopted process is simple, no complex steps such as high temperature, high pressure, and temperature program are required, and only simple heat treatment under normal pressure can prepare supported and non-supported molybdenum phosphide. The raw materials used are cheap and safe, and the cost of required equipment is low, which is very suitable for industrial production. This type of catalyst can be widely used in the hydrotreating of oil products because of its good HDS and HDN activities. Background technique [0002] In recent years, with stricter environmental regulations and lower quality of crude oil worldwide, countries have increased refining depth and developed new catalysts to produce clean fuels. Traditional sulfurized catalysts ha...

Claims

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Application Information

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IPC IPC(8): B01J27/19B01J37/08B01J37/02C01B25/08
Inventor 李伟关庆鑫张明慧
Owner NANKAI UNIV
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