公开(公告)号：EP4112547A1

公开(公告)日：2023-01-04

申请号：EP21785231.8

申请日：2021-01-26

申请人： China Petroleum & Chemical Corporation ,  Sinopec Research Institute of Safety Engineering Co., Ltd.

发明人： AN, Fei ,  SUN, Bing ,  LI, Na ,  WANG, Lin ,  SHI, Ning ,  XU, Wei ,  ZHANG, Shucai ,  WANG, Haozhi ,  WANG, Shiqiang ,  FENG, Junjie ,  ZHAO, Chenyang

IPC分类号： C01B32/184 ,  G01N27/12

摘要： The present disclosure relates to the field of materials, and discloses a gas-sensitive material, a preparation method therefore and an application thereof, and a gas sensor using the gas-sensitive material. The gas-sensitive material is a carbon material-metal oxide composite nanomaterial formed by compounding a carbon material and metal oxides, wherein 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, also obviates the need for external heating, implements self-heating simply by Joule heating of a measuring circuit, and has reduced power consumption and increased sensitivity.

公开(公告)号：EP3476476A1

公开(公告)日：2019-05-01

申请号：EP17830296.4

申请日：2017-05-26

申请人： China Petroleum & Chemical Corporation ,  Sinopec Research Institute Of Safety Engineering

发明人： ZHAO, Yuxin ,  MU, Shanjun ,  JIANG, Chunming ,  LIU, Quanzhen ,  ZHANG, Weihua ,  WANG, Lin ,  ZHANG, Shucai ,  MU, Xiaodong

IPC分类号： B01J20/20 ,  B01J20/30

摘要： A carbon-based porous material microscopically exhibiting a three-dimension 1 cross-linked net-like hierarchical pore structure, a specific surface area of 500∼2,500m 2 /g and a water contact angle greater than 90°. The surface of the carbon-based porous material has a through hierarchical pore structure with mesopores nested in macropores and micropores nested in mesopores, the content of mesopores is high, and there are more adsorption activity sites exposed on the surface of the material, so that the diffusion path for organic gas molecules in the adsorption process is shortened. At the same time, the absorption and desorption rates may also be accelerated and the desorption temperature may be lowered. Furthermore, benefits result for solving the desorption and recovery problems of organic gas molecules. Moreover, the defects of ordinary porous carbon materials being easily hygroscopic, having a weakened capacity to adsorb target gas molecules in a humid environment, etc. are further effectively solved.