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Pyrolysis analysis of polyethylene terephthalate: effects of carrier gases (N2, He, and Ar) and zeolite catalyst (A4) on yield
Journal of Chemical Technology and Biotechnology ( IF 2.8 ) Pub Date : 2022-07-29 , DOI: 10.1002/jctb.7200
Farid Atashi 1 , Mortaza Gholizadeh 1 , Farshad Ataei 1
Affiliation  

Polyethylene terephthalate, the main material used for beverage bottle packaging, accounts for an average of 7.6% of all plastic waste in Europe. This material is not biodegradable and takes several centuries to decompose. The pyrolysis process in the presence of a catalyst and carrier gases can convert PET waste into solid, liquid, and gaseous materials that can be utilized as fuel. This study evaluated the effects of different carrier gases on the pyrolysis of PET waste in the presence and absence of a zeolite catalyst (A4). The results showed that the catalyst affected the pyrolysis yield; it increased the liquid and gaseous products, as well as the benzoic acid content. However, the effect declined when replacing the carrier gas with a larger molecular weight carrier gas. The alcohol content of the char was larger than that of the wax. The maximum alcohol content was detected under He, implying the direct impact of the carrier on the pyrolysis products. The hydrocarbons identified in the char were affected by changing the carrier gas, and a different distribution of hydrocarbon groups was found by converting the aromatic group into aliphatic compounds. Broadly speaking, in the presence of helium gas and the catalyst, the lowest amount of coke and the lightest compounds were observed. The amount of coke in the presence of nitrogen gas was the same as that of helium gas, but it had heavier compounds. Meanwhile in the presence of argon gas, which has a high molecular mass, more coke and heavier compounds were obtained. © 2022 Society of Chemical Industry (SCI).

中文翻译:

聚对苯二甲酸乙二醇酯的热解分析:载气(N2、He 和 Ar)和沸石催化剂(A4)对收率的影响

用于饮料瓶包装的主要材料聚对苯二甲酸乙二醇酯平均占欧洲所有塑料垃圾的 7.6%。这种材料不可生物降解,需要几个世纪才能分解。在催化剂和载气存在下的热解过程可以将 PET 废料转化为可用作燃料的固体、液体和气体材料。本研究评估了在存在和不存在沸石催化剂 (A4) 的情况下,不同载气对 PET 废物热解的影响。结果表明,催化剂影响热解收率;它增加了液体和气体产物,以及苯甲酸的含量。然而,当用更大分子量的载气代替载气时,效果会下降。炭的酒精含量大于蜡的酒精含量。在 He 下检测到最大酒精含量,表明载体对热解产物的直接影响。炭中鉴定的烃类受到载气变化的影响,通过将芳族基团转化为脂肪族化合物,发现了不同的烃基分布。概括地说,在氦气和催化剂存在下,观察到的焦炭量最低,化合物最轻。氮气存在下的焦炭量与氦气相同,但其化合物较重。同时在具有高分子量的氩气存在下,得到更多的焦炭和更重的化合物。© 2022 化学工业协会 (SCI)。炭中鉴定的烃类受到载气变化的影响,通过将芳族基团转化为脂肪族化合物,发现了不同的烃基分布。概括地说,在氦气和催化剂存在下,观察到的焦炭量最低,化合物最轻。氮气存在下的焦炭量与氦气相同,但其化合物较重。同时在具有高分子量的氩气存在下,得到更多的焦炭和更重的化合物。© 2022 化学工业协会 (SCI)。炭中鉴定的烃类受到载气变化的影响,通过将芳族基团转化为脂肪族化合物,发现了不同的烃基分布。概括地说,在氦气和催化剂存在下,观察到的焦炭量最低,化合物最轻。氮气存在下的焦炭量与氦气相同,但其化合物较重。同时在具有高分子量的氩气存在下,得到更多的焦炭和更重的化合物。© 2022 化学工业协会 (SCI)。在氦气和催化剂存在下,观察到的焦炭量最少,化合物最轻。氮气存在下的焦炭量与氦气相同,但其化合物较重。同时在具有高分子量的氩气存在下,得到更多的焦炭和更重的化合物。© 2022 化学工业协会 (SCI)。在氦气和催化剂存在下,观察到的焦炭量最少,化合物最轻。氮气存在下的焦炭量与氦气相同,但其化合物较重。同时在具有高分子量的氩气存在下,得到更多的焦炭和更重的化合物。© 2022 化学工业协会 (SCI)。
更新日期:2022-07-29
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