Method for preparing Ni2P by reducing nickel oxide precursor through thermal treatment at low temperature

A nickel oxide and precursor technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as difficulty in realizing temperature-programmed reduction, and achieve low equipment cost, short production cycle, Inexpensive effect

Inactive Publication Date: 2010-03-17
NANKAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, temperature-programmed reduction is als

Method used

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  • Method for preparing Ni2P by reducing nickel oxide precursor through thermal treatment at low temperature
  • Method for preparing Ni2P by reducing nickel oxide precursor through thermal treatment at low temperature

Examples

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Embodiment 1

[0014] First, 5.89 g of sodium hypophosphite (NaH 2 PO 2 .H 2 O) was added into 18mL deionized water, and after dissolving for 10min, 1.49g of NiO was added. After continuing to stir for 2 hours, the resulting solution was put into a petri dish and dried at 80°C. Then put the dried precursor powder into the reactor, heat treatment at 250°C for 10 minutes in a static nitrogen protection, and then wash the product with water and dry it. The obtained sample is named A, and A has an attached figure 1 Characteristics.

Embodiment 2

[0016] First, 5.93g of nickel nitrate (Ni(NO 3 ) 2 .6H 2 O) Added into 18mL deionized water, dissolved for 10min and then added 3.91g of MCM-41 molecular sieves. After continuing to stir for 2 hours, the resulting solution was put into a petri dish and dried at 100°C. Then put the dried precursor powder into a muffle furnace, and bake it in an air atmosphere at 550° C. for 2 hours to obtain supported nickel oxide (NiO / MCM-41). With stirring at room temperature, 5.89 g of NaH 2 PO 2 .H 2 O was added to 18 mL of deionized water, dissolved for 10 min and then added to the supported nickel oxide (NiO / MCM-41). After continuing to stir for 2 hours, the resulting solution was put into a petri dish and dried at 80°C. Then put the dried precursor powder into the reactor, heat treatment at 250°C for 10 minutes in a static nitrogen protection, and then wash the product with water and dry it. The obtained sample is named B, and B has an attached figure 2 Characteristics.

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Abstract

The invention provides a novel method for preparing nickel phosphide (Ni2P) by utilizing phosphine produced by thermal decomposition of sodium hypophosphite to reduce nickel oxide precursor. In the method, nickel nitrate is adopted as a nickel source and then roasted to obtain nickel oxide, and the obtained nickel oxide is dipped into sodium hypophosphite solution to obtain the nickel oxide precursor, and simple low temperature thermal treatment of the nickel oxide precursor is carried out so as to synthesize supported and unsupported Ni2P. The invention has the characteristics of simple process, low Ni2P preparation temperature, short production period, without the complex steps of temperature programming, and the like as well as just simple thermal treatment at normal temperature. Raw materials used in the method are low in price and safety, and devices used in the method are low in cost. The catalyst can be widely used for hydrogenation treatment of oils due to higher hydrodesulfurization and hydrodenitrogenation activities.

Description

technical field [0001] The present invention proposes a kind of nickel phosphide (Ni 2 P) new method. In this method, nickel nitrate is used as the nickel source to obtain nickel oxide after roasting, and the obtained nickel oxide is impregnated with sodium hypophosphite solution to obtain a precursor, and the precursor is subjected to simple low-temperature heat treatment to synthesize supported and non-supported Ni. 2 p. The present invention is characterized in that the technique adopted is simple, Ni 2 The preparation temperature of P is low, the production cycle is short, and complex steps such as temperature programming are not required, and only simple heat treatment under normal pressure is required. The raw materials used are cheap and safe, and the cost of required equipment is low. This type of catalyst can be widely used in the hydrotreating of oil products because of its high hydrodesulfurization and hydrodenitrogenation activities. Background technique [...

Claims

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Application Information

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IPC IPC(8): C01B25/08B01J27/185B01J29/76B01J37/02B01J37/08
Inventor 李伟关庆鑫张明慧
Owner NANKAI UNIV
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