China Petroleum Chemical Corporation

China Petroleum & Chemical Corporation Qingdao Research Institute of Safety Engineering

Sinopec Research Institute of Safety Engineering Co., Ltd.

Sinopec Research Institute Op Safety Engineering

Sinopec Research Institute of Safety Engineering

Lin Wang

Shanjun Mu

Xiaodong Mu

Shucai Zhang

Weihua Zhang

Quanzhen Liu

Chunming Jiang

Hui Yu

Jianxiang Li

Rifeng Zhou

Zuzheng Shang

Longmei Tan

Jingfeng Wu

Xuqing Lang

Na Li

Wei Xu

Feng Sun

Bing Sun

Chenyang Zhao

Shiqiang Wang

Fei An

Haozhi Wang

Jing Zhang

Tie Zhang

Guosheng Dong

Ning Shi

Junpeng Ren

Junjie Feng

Yuxin Zhao

A gas-sensitive material, a preparation method therefore and an application thereof, and a gas sensor using the gas-sensitive material are provided. The gas-sensitive material is a carbon material-metal oxide composite nanomaterial formed by compounding a carbon material and metal oxides. The content of the carbon material is 0.5˜20 wt. % and the content of the metal oxides is 80˜99.5 wt. %; the metal oxides contain tungsten oxide and one or more selected from tin oxide, iron oxide, titanium oxide, copper oxide, molybdenum oxide, and zinc oxide; the metal oxides are formed on the carbon material in the form of nanowires, and the nanowires are tungsten oxide-doped nanowires. The gas-sensitive material has reduced resistance, is capable of responding to various gases at a reduced working temperature.

Self-heating gas sensor, gas-sensitive material, preparation method for same, and applications thereof

A foam production method includes mixing liquid nitrogen with a foaming material to produce foam. A gas is produced in situ from liquid nitrogen. As the ratio of the volume of the gas produced by gasification of liquid nitrogen to the volume of the liquid nitrogen is relatively high, when a large gas supply flow is needed to generate a large foam flow, a liquid nitrogen storage device of a small volume can be used instead of bulky air supply devices such as high-pressure gas cylinders, air compressors, air compressor sets and the like, reducing the volume of the air supply device. In addition, the liquid nitrogen used in foaming will release nitrogen gas after the foam blast, such that the nitrogen is also able to inhibit combustion on the surface of burning materials, accelerating the extinguishing of the fire.

Foam producing method, fire extinguishing method, and appliance for foam extinguishing

Described are a low temperature plasma reaction device and a hydrogen sulfide decomposition method. The reaction device includes: a first cavity; a second cavity, the second cavity being embedded inside or outside the first cavity; an inner electrode, the inner electrode being arranged in the first cavity; an outer electrode; and a barrier dielectric arranged between the outer electrode and the inner electrode. The hydrogen sulfide decomposition method includes: implementing dielectric barrier discharge at the outer electrode and the inner electrode of the low temperature plasma reaction device, introducing a raw material gas containing hydrogen sulfide into the first cavity to implement a hydrogen sulfide decomposition method, and continuously introducing a thermally conductive medium into the second cavity in order to control the temperature of the first cavity of the low temperature plasma reaction device.

Low temperature plasma reaction device and hydrogen sulfide decomposition method

The present disclosure relates to a carbon-based porous material microscopically exhibiting a three-dimensional cross-linked net-like hierarchical pore structures with micropores nested in mesopores that are in turn nested in macropores. Such material provides for accelerated adsorption and desorption rates and lower desorption temperatures for recovery of organic gas molecules.

Carbon-based porous material and preparation method and use thereof

Growing community of inventors

Qingdao, China

Lin Wang