ICCAS OpenIR
Study on ethylene oligomerization with a new diimine pyridine iron-based catalyst
Ma, Z; Sun, WH; Wang, H; Yang, WD; Hu, YL
2002-10-01
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue5Pages:703-706
AbstractA new iron based catalyst 2,6-bis[(1-fluorenylimino) ethyl] pyridine iron dicloride (2) was synthesized via Shiff base condensation with 2, 6-diacetylpyridine and 9-aminofluorene hydrochloride under formic acid as catalyst. Ethylene oligomerizations were carried out using this new catalyst and methylaluminoxane as cocatalyst under various conditions. The effects of Al/Fe molar ratio, reaction temperature and ethylene pressure on catalytic activity and product distribution were investigated. This novel catalyst had a good activity for ethylene oligomerization (e.g. 4.21 x 10(6) g oligomers.mol(-1) Fe.h(-1), Al/Fe molar ratio = 2000, reaction temperature = 40degreesC, ethylene pressure = 1.5 MPa). The catalytic activity increased with the increasing concentration of MAO. The tendency to produce more C-4 similar to C-10 olefins was attributed to the more chain transfer reactions to MAO. The higher the reaction temperature, the lower catalytic activity was present. The reasonable explanation was the combination of the accelerated catalyst's deactivation and the decrease in ethylene concentration in solvent due to the elevated temperature. Under such condition, however, the oligomerization of ethylene produced more short chain olefins which are adapted to act as comonomers for preparation of linear low density polyethylene materials. Ethylene pressure in autoclave also had an important influence on catalytic activity and carbon-number distribution of product. The catalytic activity increased sharply with the elevated ethylene pressure. However, the proportion of C-4 similar to C-10 olefins in product decreased in higher pressure due to the enhanced chain propagation reaction. The research work indicated that the control of catalytic activity and product distribution can be realized by the variation of oligomerization conditions such as Al/Fe molar ratio, reaction temperature and ethylene pressure. The results also showed that the ethylene oligomerization employing this novel iron-based catalyst mainly produces the C-4 similar to C-10 olefins with high selectivity for linear C-4 similar to C-10 alpha-olefin (>98 %).
KeywordDiimine Pyridine Iron Based Catalyst Ethylene Oligomerization Carbon-number Distribution Of Product Alpha-olefin Selectivity For Alpha-olefin
Indexed BySCI
Language英语
WOS IDWOS:000178936800032
PublisherSCIENCE CHINA PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78792
Collection中国科学院化学研究所
Corresponding AuthorMa, Z
Affiliation1.Chinese Acad Sci, State Key Lab Engn Phys, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Hebei Univ Technol, Inst Polymer Sci & Engn, Coll Chem Engn, Tianjin 300130, Peoples R China
4.Chinese Natl Petr Corp, Beijing Lab Catalysis, Key Lab Catalysis, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Ma, Z,Sun, WH,Wang, H,et al. Study on ethylene oligomerization with a new diimine pyridine iron-based catalyst[J]. ACTA POLYMERICA SINICA,2002(5):703-706.
APA Ma, Z,Sun, WH,Wang, H,Yang, WD,&Hu, YL.(2002).Study on ethylene oligomerization with a new diimine pyridine iron-based catalyst.ACTA POLYMERICA SINICA(5),703-706.
MLA Ma, Z,et al."Study on ethylene oligomerization with a new diimine pyridine iron-based catalyst".ACTA POLYMERICA SINICA .5(2002):703-706.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ma, Z]'s Articles
[Sun, WH]'s Articles
[Wang, H]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ma, Z]'s Articles
[Sun, WH]'s Articles
[Wang, H]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ma, Z]'s Articles
[Sun, WH]'s Articles
[Wang, H]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.