热解产芳香胺: Aromatic amines from pyrolysis of lignin and phenol-formaldehyde resins

Recently, Dr. Lujiang Xu together with Prof. Zhen Fang published a paper in “Bioresource Technology” about the production of aromatic amines from phenol-formaldehyde resins and lignin via co-catalytic pyrolysis with ammonia process.

Aromatic amines could be produced from organic wastes via catalytic pyrolysis with ammonia that served not only as a carrier gas but also as a reactant. Aromatic amines of 14.2 C% with selectivity of 57.6 % were obtained from phenol-formaldehyde (PF) resins via pyrolysis over commercial HZSM-5-3 zeolite (Si/Al ratio of 80) catalyst at 650 °C. Significant synergetic effects have been observed when lignin was added, which improved aromatic amines yield by 32.2 % to 11.8 C% at the mixing weight ratio of lignin to PF resins of 1:1. HZSM-5-3 was slightly deactivated after 3 cycles with acid sites loss. Catalytic co-pyrolysis of plastics and biomass wastes is a fast and effective method to produce aromatic amines.

Aromatic amines was produced from PF resins with 14.2 C% yield and 58% selectivity. Co-pyrolysis was effectively enhance aromatic amines yield by 32.2%. (酚醛树脂通过氨气氛围催化热解可以生产14.2%碳产率的芳香胺;与木质素共热解,酚醛树脂可以提高芳香胺产率32%)

Related results were published in Bioresource Technology:

Lujiang Xu, Zijian He, Huan Zhang, Shenghong Wu, Chengyu Dong, Zhen Fang*, Production of aromatic amines via catalytic co-pyrolysis of lignin and phenol-formaldehyde resins with ammonia over commercial HZSM-5 zeolites, Bioresource Technology, https://doi.org/10.1016/j.biortech.2020.124252  (Oct. 2020) (Article).

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徐禄江博士在国际学术期刊Bioresource Technology发表学术论文

氨气氛围催化共热解木质素和酚醛树脂制备芳香胺化合物

最近,农业工程TOP期刊Bioresource Technology(影响因子7.54, Q1,第一署名单位为南京农业大学,第一作者为徐禄江博士,通讯作者为方真教授)发表了废弃塑料酚醛树脂和木质素通过氨气氛围催化热解的方式生产芳香胺的文章。

芳香胺(如苯胺等)是一类重要的大宗化工原料。利用氨作为载气和反应气体,通过催化裂解的方法转化有机废物(酚醛树脂和木质素)生产芳香胺。以工业用HZSM-5-3(Si/Al=80)沸石分子筛为催化剂在650℃高温下裂解酚醛树脂,可以得到了14.2 C%的芳香胺,且产物中芳香胺选择性达到57.6%。当木质素与酚醛树脂的混合重量比为1:1时,添加酚醛树脂可使芳香胺的产率提高32.2%。催化剂在3个循环后由于酸位点损失导致略有失活。由此可见,氨气氛围下的废弃塑料与木质素废料催化共热解也是一种可以快速制备芳香族胺的有效方法。

详情可见:

Lujiang Xu, Zijian He, Huan Zhang, Shenghong Wu, Chengyu Dong, Zhen Fang*, Production of aromatic amines via catalytic co-pyrolysis of lignin and phenol-formaldehyde resins with ammonia over commercial HZSM-5 zeolites, Bioresource Technology, https://doi.org/10.1016/j.biortech.2020.124252  (Oct. 2020) (Article).