Application of Hydrazine Hydrate in the Synthesis of Octa(aminophenyl)silsesquioxane (OAPS) Poss

• 作者: Fredrick Nzioka Mutua Jacob Kiptanui Koech Qun Shao Yimin Wang
• 来源期刊: 化学工程与科学期刊(英文)
• 学科: 化学
• 关键词: Octa(aminophenyl)silsesquioxane Octa(nitrophenyl)silsesquioxane HYDRAZINE NANOCOMPOSITE Iron(III)Chloride Reduction
• 年，卷（期）: 2013,（1）
• 页码范围: 93-97
• 页数: 5页
• 分类号: O6

摘要

Octa(aminophenyl)silsesquioxane (OAPS) was prepared from octaphenyl silsesquioxane (OPS) in two steps, first nitration to obtain Octa(nitrophenyl)silsesquioxane (ONPS) then reduction by using the stable, inexpensive, and readily available hydrazine hydrate as the reducing agent in the presence of Iron(III)Chloride catalyst with a yield of around 87%. Hydrazine is a two-electron reducing agent whereas nitro group is a four-electron reduction process. The activated carbon serves as an adsorbent and electrical conductor enabling the reaction to occur by acting as a mediator between a two-electron reagent and a four-electron process. Adsorption provides a reducing potential and a supply of electrons from many hydrazines making possible the initial four-electron process even though each individual hydrazine is a two-electron donor. The product was characterized by FTIR and 1H NMR. The time period for preparation of ONPS from octaphenyl silsesquioxane was considerably shortened to avoid double nitration of the aromatic rings.