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Technology for preparing phosphine by reacting aluminium phosphide with sulfuric acid

A technology of aluminum phosphide and sulfuric acid, applied in the direction of phosphine, etc., can solve problems such as pollution, and achieve the effect of convenient use and reasonable design

Inactive Publication Date: 2011-01-26
TIANJIN TAIYUAN INDAL GAS
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Problems solved by technology

This technology not only has reasonable process, simple preparation, but also easy to obtain raw materials, high product yield, and the purity of the produced phosphine reaches 5N (99.999%), and solves the problem of environmental pollution

Method used

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  • Technology for preparing phosphine by reacting aluminium phosphide with sulfuric acid
  • Technology for preparing phosphine by reacting aluminium phosphide with sulfuric acid

Examples

Experimental program
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Effect test

Embodiment Construction

[0010] refer to figure 1 , the upper end of the integrated flask (4) is connected and installed with a constant pressure feeding funnel (1) through a connecting pipe (3), and a nitrogen inlet pipe (2) is connected and installed at the same time, and an electromagnetic heating stirrer ( 5), then, connect the KOH drying pipe (6), 1# piston (7), 2# piston (8), 3# piston (9), 4# piston (10), 1# through the connecting pipe (15) in sequence Catcher (11), 2# trap (12), 3# trap (13) and constitute.

[0011] When in use, an adapter (3) is installed on the flask (4) equipped with an electromagnetic heating stirrer (5), on which two constant-pressure feeding funnels (1) are inserted into aluminum phosphide, and then installed on the flask (4). The connected nitrogen inlet pipe (2) connects the pure nitrogen cylinder to supply nitrogen, and connects the gas outlet pipes of several cold traps through the connecting pipe (15). The first 1# catcher (11) cold trap is -78 ℃ (dry ice-acetone ...

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Abstract

The invention discloses technology for preparing phosphine by reacting aluminium phosphide with sulfuric acid. In the technology, the upper end of an integrated flask is connected and provided with a constant-pressure charging hopper through a connection pipe and also connected and provided with a nitrogen inlet pipe; an electromagnetic heating stirrer is arranged on inner bottom of the flask; and a KOH drying pipe, a piston 1, a piston 2, a piston3, a piston 4, a catcher 1, a catcher 2 and a catcher 3 are sequentially connected through a connection pipe. The technology has the advantages of reasonable design and convenient use and is ideal technology for preparing phosphine.

Description

Technical field [0001] The invention relates to a technology for chemically producing phosphine, in particular to a technology for preparing phosphine by reacting aluminum phosphide and sulfuric acid, which is suitable for chemical synthesis of phosphine. Background technique [0002] At present, phosphine has important uses in many industrial fields such as semiconductor industry, chemical industry, grain storage industry and metallurgical industry, but the production process is complicated, the cost is high, and the product quality is poor. Contents of the invention [0003] The problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a technology for preparing phosphine by reacting aluminum phosphide and sulfuric acid. The technology is not only reasonable in process and simple in preparation, but also has easy-to-obtain raw materials, high product yield, and the purity of the produced phosphine reaches 5N (99.999%), and...

Claims

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Application Information

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IPC IPC(8): C01B25/06
Inventor 李中元
Owner TIANJIN TAIYUAN INDAL GAS
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