Basic principle
Vehicle-mounted aluminum alloy hydrolysis hydrogen production technology mainly uses the chemical reaction of metallic aluminum and water to produce hydrogen, which is a hydrogen production technology. The reaction of aluminum and water to produce hydrogen can be expressed by the following formula:
2Al＋4H2O＝2AlO(OH)＋3H2↑
2Al＋6H2O＝2Al (OH)3＋3H2↑
Aluminum is abundant on earth, comes from a wide range of sources, is cheap, and has a low density. The aluminum-water reaction process does not produce harmful substances containing carbon and nitrogen, and the product is environmentally friendly. The hydrolysis reaction of aluminum metal also has high hydrogen production and rate. Although aluminum reacts easily with water, under normal conditions, because the surface of aluminum is in contact with air, itera covered with a dense oxide film, which hinders the contact reaction between metallic aluminum and water. Therefore, how to remove oxide effectively. film on the surface of the aluminum and accelerate the reaction? , improving the conversion rate is the key to the aluminum-water reaction. Considering the above difficulties, a highly active hydrogen-producing aluminum alloy can be obtained by optimizing the composition and preparation process of hydrogen-producing aluminum alloys to achieve rapid hydrolysis to produce hydrogen. After hydrogen production, metaaluminic acid produced by hydrolysis is obtained, which can be directly used as a flame retardant material. High quality metaaluminic acid can be used in battery separator industry and can then be processed into micro-nano alumina, which has high quality. economic value. At the same time, an al oxideBetter quality aluminum can be obtained by heating metaaluminic acid and aluminum hydroxide.
Professor Dong Shijie of Hubei University of Technology led a team that began developing related technologies in 2006 and was approved by the Ministry of Science and Technology in 2010 to The 973 preliminary special research project "Fundamental Research on Key Technologies for Preparing Aluminum Alloys for Hydrogen Production by Vehicle-Mounted Hydrolysis", was approved by the National Natural Science Foundation of China in 2017 for the general project “Mechanism for the preparation and production of hydrogen from highly active micro-nano Al-Ga-In -Bi2O3-SnCl2 materials for the production of hydrogen by hydrolysis”.
Authorized patent ZL201610564832.5 describes an aluminum alloy for the production of hydrogen by hydrolysis and its preparation method. It uses mainement a mechanical alloy to add a small amount of low melting point metal and inorganic salt to the metallic aluminum powder. to prepare the aluminum alloy. It is a hydrogen-producing hydrolyzed aluminum alloy that can react with water to produce hydrogen at normal temperatures and pressures. In addition, by adjusting the content of additives, it is possible to obtain aluminum alloys capable of producing hydrogen by hydrolysis with different quantities of hydrogen. Patent application CN201910117543.4 describes an aluminum alloy for the production of hydrogen by hydrolysis, as well as its preparation process and its application. It is composed of 90 to 95% by weight of Al and 5 to 10% by weight of additives. The additives are metallic elements, metal oxides and one or more metal chlorides. two. Aluminum alloy for hydrogen production by hydrolysis is prepared by alloyingmechanical. According to different needs, aluminum alloys for hydrolysis hydrogen production with different hydrogen production properties can be obtained by changing the composition and additive content as well as the mechanical alloying process parameters. The above two patents have been authorized to Nanyang Qingdong Energy Technology Co., Ltd., allowing it to be used during operation, and the authorized use period is 4 years.