ฉันรักแปลPyrolysis behavior and kinetic characteristics of Ni-impregnated oak wood were investigated by using a thermogravimetric analyzer and a fixed-bed reactor. Thermogravimetric analysis showed that the pyrolysis processes underwent three consecutive stages that corresponded to water evaporation, volatilization and decomposition of relatively light organic substance, and cracking of a relatively heavy organic substance. The results showed that after nickel impregnation, the second stage of oak pyrolysis occurred earlier, which could be described by a first-order reaction kinetic model with the activation energy and pre-exponential factor of 64.75 kJ.mol(-1) and 3.66 x 10(3) min(-1), respectively. The laboratory-scale pyrolysis of oak by Ni impregnation or by directly mixing Ni was then investigated at temperatures of 500, 600, 700, and 800 degrees C in a fixed-bed reactor, and the effects of the temperature on mass balance, product distribution, and product characteristics were also studied. The results showed that the mass balances exhibited errors less than 6%. The influence of temperature on the distribution of products was obvious. Raising the pyrolysis temperature resulted in an increased yield of gas and decreased yield of char. Oak impregnation by Ni could obtain more gas products and less liquid products than untreated oak and oak mixed by Ni when pyrolysis was performed under the same conditions. GC-MS results showed that the number of detectable complex organic compounds also decreased after Ni impregnation. These results showed that oak impregnation with nickel salts was a promising way to promote the pyrolysis process for high gas production.