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Effect of Pt catalyst on the condensable hydrocarbon content generated via food waste pyrolysis.
Chemosphere ( IF 8.8 ) Pub Date : 2020-01-27 , DOI: 10.1016/j.chemosphere.2020.126043
Soosan Kim 1 , Chang-Gu Lee 1 , Yong Tae Kim 2 , Ki-Hyun Kim 3 , Jechan Lee 1
Affiliation  

A Pt catalyst supported on activated carbon (Pt/AC) was used for an environmentally friendly thermal treatment of food waste under an inert atmosphere (i.e., pyrolysis). This catalyst influenced the amounts of condensable hydrocarbons and noncondensable gases but not that of the solid remaining after the pyrolysis; in particular, it contributed to shifting the carbon distribution from the condensable hydrocarbons to the noncondensable gases for the food waste pyrolysis. Moreover, its use suppressed the generation of harmful chemical compounds, especially at high temperatures. For example, a Pt/AC-catalyzed pyrolysis at 700 °C produced about 4 times fewer benzene derivatives than the same treatment without a catalyst; this probably occurred because the Pt sites catalyzed the decyclization reaction and/or the free radical mechanism, which is dominant in the thermal cracking of carbon-containing feedstock. This study suggests that a Pt/AC-catalyzed pyrolysis would be a more environmentally benign food waste treatment method.

中文翻译:

Pt催化剂对食物垃圾热解产生的可冷凝碳氢化合物含量的影响。

负载在活性炭上的Pt催化剂(Pt / AC)用于在惰性气氛下对食物残渣进行环保的热处理(即热解)。该催化剂影响可冷凝烃和不可冷凝气体的量,但不影响热解后残留的固体量;特别是,它有助于将碳分布从可冷凝的碳氢化合物转移到用于食物垃圾热解的不可冷凝的气体。此外,其使用抑制了有害化合物的产生,特别是在高温下。例如,在700°C下Pt / AC催化的热解比没有催化剂的相同处理产生的苯衍生物少约4倍。这可能是因为Pt位点催化了脱环反应和/或自由基机理,在含碳原料的热裂化中占主导地位。这项研究表明,Pt / AC催化的热解将是一种对环境更无害的食物垃圾处理方法。
更新日期:2020-01-27
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