کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10247961 | 49171 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Production of micro- and mesoporous carbons by pyrolysis of the lithium salts of aromatic acids
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Production of micro- and mesoporous carbons by pyrolysis of the lithium salts of aromatic acids Production of micro- and mesoporous carbons by pyrolysis of the lithium salts of aromatic acids](/preview/png/10247961.png)
چکیده انگلیسی
As a new process for the production of micro- and mesoporous carbon materials, the thermal decomposition of the lithium salts of aromatic acids (terephthalic acid, 1,3,5-benzenetricarboxylic acid, and 1,2,4,5-benzenetetracarboxylic acid) was followed by TGA, MS, SEM, TEM, elemental analysis, and N2 adsorption. The lithium salt of terephthalic acid was decomposed at temperatures above 550 °C and then converted into a composite of amorphous carbon and microcrystalline lithium carbonate (600-700 °C) or oxide (800-900 °C). The amorphous carbons produced by washing out the lithium compounds showed surface areas of 480-780 m2 gâ1, and the micro- and mesopore volumes attained 0.27 and 0.93 cm3 gâ1, respectively, at the pyrolytic temperature of 850 °C. The mesopores were distributed from ca. 20 to 100 nm in size, and the distribution was independent of the pyrolytic temperatures. The pore size was, however, increased when larger-size crystals of the lithium salt were employed as the starting material. Both porous carbons prepared from the lithium salts of 1,3,5-benzenetricarboxylic acid and 1,2,4,5-benzenetetracarboxylic acid showed similar surface areas and pore size distributions to those from terephthalic acid.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 87, Issue 2, 27 December 2005, Pages 118-123
Journal: Microporous and Mesoporous Materials - Volume 87, Issue 2, 27 December 2005, Pages 118-123
نویسندگان
Katsumi Kamegawa, Masaya Kodama, Keiko Nishikubo, Hiroshi Yamada, Yoshio Adachi, Hisayoshi Yoshida,