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Method for preparing loaded and non-loaded Cu3P by adopting copper oxide precursor reduction method

A copper oxide, non-supported technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, phosphides, etc., can solve the problems of limited application and inability to prepare Cu3P, and achieve low preparation temperature, low cost, and short production cycle Effect

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

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Problems solved by technology

None of the above methods can prepare supported Cu 3 P, so it also limits its application in catalysis

Method used

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  • Method for preparing loaded and non-loaded Cu3P by adopting copper oxide precursor reduction method
  • Method for preparing loaded and non-loaded Cu3P by adopting copper oxide precursor reduction method
  • Method for preparing loaded and non-loaded Cu3P by adopting copper oxide precursor reduction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First, 10.71 g of NaH was mixed with stirring at room temperature 2 PO 2 .H 2 O was added to 27 mL of deionized water, dissolved for 10 min, and then 1.59 g of CuO was added. After stirring for 1 h, the resulting solution was put into a Petri dish and dried at 40 °C. The dried precursor powder was loaded into the reactor, and heat-treated at 300° C. for 20 min in a static nitrogen protective atmosphere. Then the obtained product is washed with water, pickled and then dried, and the obtained sample is named A, and A has an attached figure 1 Characteristics.

Embodiment 2

[0018] First, 2.43g of copper nitrate was added to 13mL of deionized water under stirring at room temperature, and after dissolving for 10min, 2.12g of MCM-41 molecular sieves were added. After continuing to stir for 1 hour, the resulting solution was put into a petri dish and dried at 100°C. Put the dried precursor powder into a muffle furnace, and bake it at 500° C. for 2 hours in an air atmosphere to obtain supported copper oxide (CuO / MCM-41). With stirring at room temperature, 4.82 g of NaH 2 PO 2 .H 2 O was added to 13 mL of deionized water, and after dissolving for 10 min, the supported copper oxide (CuO / MCM-41) was added. After continuing to stir for 1 hour, the resulting solution was put into a petri dish and dried at 80°C. The dried precursor powder was loaded into the reactor, and heat-treated at 400° C. for 20 min in a static nitrogen protective atmosphere. Then the obtained product is washed with water, pickled and dried, and the obtained sample is named as B,...

Embodiment 3

[0020] The preparation process is the same as that of sample B, only changing the NaH 2 PO 2 .H 2 The amount of O is 5.35g, 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 new method for preparing Cu3P by using thermal decomposition of a mixed precursor of sodium hypophosphite and copper oxide. The method comprises the following steps: roastingcopper nitrate to obtain copper oxide, and then soaking the copper oxide in sodium hypophosphite solution to obtain the mixed precursor; and performing simple heat treatment to the mixed precursor inthe nitrogen protective atmosphere in the static state to synthesize the loaded and the non-loaded Cu3P. The invention has the characteristics of safe raw materials, low cost, low preparation temperature of Cu3P, short production period and no flowing nitrogen gas used during the preparation process. Due to better cycle performance and reversibility than that of graphite, the Cu3P in the lithium ion battery can be taken as the potential cathode electrode material.

Description

technical field [0001] The present invention proposes a method of preparing Cu by thermal decomposition of sodium hypophosphite and copper oxide mixed precursor 3 New method of P. In the method, copper nitrate is roasted to obtain copper oxide, and the copper oxide is impregnated with sodium hypophosphite solution to obtain a mixed precursor. Synthesis of supported and unsupported Cu by simple thermal treatment of mixed precursors in a static nitrogen protective atmosphere 3 p. The present invention is characterized in that the raw materials used are safe and low in cost, Cu 3 The preparation temperature of P is low, the production cycle is short, and no flowing nitrogen gas is used in the preparation process. Background technique [0002] Cu 3 P is mainly used for sintering iron-based powder, stainless steel powder, high-speed steel powder metallurgy. It can lower the sintering temperature and increase the density and strength. Recent studies have shown that due to C...

Claims

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Application Information

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IPC IPC(8): C01B25/08B01J27/14B01J29/76B01J37/08B01J37/02
Inventor 李伟关庆鑫张明慧
Owner NANKAI UNIV
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