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In order to solve the problems of microwave plasma decomposition of 13CF4, such as complex operation process, harsh decomposition conditions and easy corrosion of reaction tubes,the thermal catalytic decomposition of 13CF4 to produce 13CO2 was studied. Under the condition of anhydrous and high temperature, 13CF4 was decomposed into 13CO2 by gas-solid reaction between 13CF4 and solid defluorination agent, using γ-Al2O3 as solid defluorination agent, meanwhile, the metal oxide in the defluorination agent is converted into metal fluoride. The results show that when the flow rate of reaction gas is 120 mL/min, the loading amount of catalyst is more than 60 g, the content of O2 in feed gas mixture is more than 50%, and the temperature of high temperature tubular furnace is 900℃, the conversion of γ-Al2
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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