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Selective Nitration of Alkylbenzenes on HZSM-5 Catalysts by the Use of Alkyl Nitrates(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
1999年06期
Page:
539-541
Research Field:
Publishing date:

Info

Title:
Selective Nitration of Alkylbenzenes on HZSM-5 Catalysts by the Use of Alkyl Nitrates
Author(s):
PengXinhua LuChunxu
School of Chemical Engineering,NUST,Nanjing 210094
Keywords:
alkylbenzene catalyst nitrat ion alkyl nitrate regioselect ivity
PACS:
O625.61
DOI:
-
Abstract:
Reg ioselectivities of alkylbenzenes nitration w ere investigated in the presence of HZSM-5 catalysts by using alkyl nit rates in order to meet enviro-economics needs in clean nit rat ion. It w as found that the react ion was highly para-select ive. The ortho-to-para ratios of nit ro-i somers w ere 0.38, 0.33, 0.30 and 0.12 respectively w hen toluene, ethy lbenzene, n-propylbenzene and tert-buty lbenzene w ere nit rated w ith n-propyl nit rate by using HZSM- 5 of a Si/ Al rat io 62.2. T hese ratios w ere w ell below the ortho-to-para rat io of 1.63 in toluene nitration w ith sulfonit ric acid. Of a range of alkyl nit rates, para-select ivit ies of toluene nit rat ions w ere enhanced in the order of n-propyl nitrate, isooctyl nitrate, isopropyl nit rate and cyclohexyl n-i t rate.

References:

1 吕春绪.硝化理论.南京: 江苏科学技术出版社, 19931180
2 Smith K, Fry K. Para-selective mononitration o f alkylbenzens under mild conditions by use o f benzoyl nitr ate in the presence of a zeolite catalyst. T etrahedron Lett, 1989, 30( 39) : 5333~ 5336
3 吴越, 范淑蓉.固体催化剂表面的酸性及其测定法.化学通报, 1965( 2) : 1~ 11
4 Davis M E. New v istas in zeolite and molecular sieve catalysts. Acc Chem Res, 1993, 26( 3) : 111~115
5 彭新华. 固体催化剂和载体上芳烃的选择性硝化反应研究: [ 博士学位论文] . 南京: 南京理工大学, 1997

Memo

Memo:
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Last Update: 2013-03-29