The author of 《Extractive removal of both basic and non-basic nitrogens from fuel oil by dicarboxyl-modified polyethylene glycol: Performance and mechanism》 were Jiang, Xingmao; Zhu, Shuang; Gao, Jiajun; Yu, Yaqian; Xiong, Chunyan; Li, Chunxi; Yang, Weimin. And the article was published in Fuel in 2019. Recommanded Product: 1H-Indole The author mentioned the following in the article:
Polyethylene glycol [PEG, H(OCH2CH2)nOH] like PEG-600, a green extractant for organic N-compounds in fuel oil, was very active for non-basic nitrogens but not effective for basic ones. Modification of PEG that replaced -OH group with -OCH2COOH group can produce HOOCCH2(OCH2CH2)nOCH2COOH (dcPEG). For denitrogenation, dcPEG-600 was highly effective for both basic and non-basic nitrogens. N-distribution coefficient [DN, (μgN·g-1dcPEG)/(μgN·g-1oil)] of dcPEG-600 to n-octane can reach as high as 200 for indole, 92.6 for pyrrole, 42.0 for quinoline, and 81.5 for pyridine, resp. Besides, denitrogenation selectivity of dcPEG-600 to toluene (DN/Dtoluene) can amount to 462 for indole, 230 for pyrrole, 146 for quinoline, and 366 for pyridine, resp. The high performance was ascribed to contribution of active O atom on ether group and active H atom on -COOH group. The active O atom (Lewis basic site) formed H-bond with the non-basic nitrogen (Bronsted acid). The active H atom (Bronsted acidic site) not only interacted with the basic one (Lewis base) but also brought in the good selectivity. Moreover, dcPEG-600 was still effective for real oil and could be recycled for several times without the denitrogenation performance significantly decreasing.1H-Indole(cas: 120-72-9Recommanded Product: 1H-Indole) was used in this study.
1H-Indole(cas: 120-72-9) belongs to indole. Indole, also called Benzopyrrole, a heterocyclic organic compound occurring in some flower oils, such as jasmine and orange blossom, in coal tar, and in fecal matter. It is used in perfumery and in making tryptophan, an essential amino acid, and indoleacetic acid (heteroauxin), a hormone that promotes the development of roots in plant cuttings.Recommanded Product: 1H-Indole
Referemce:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles