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Preparation and Functions of Composits of Metal and Carbon which Contains unsaturated nitrogen-functionalities on its Surface.

表面含不饱和氮官能团的金属与碳复合物的制备及其功能。

基本信息

批准号：
61470082
负责人：
MOCHIDA Isao
金额：
$ 3.78万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1988
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61470082/
关键词：
Unsaturated nitrogen-functionalities Carbon Carbon-metal composites 触媒能複合材触媒機能

项目摘要

Objectives of this research are (1)preparation of carbons which contain large amounts of unsaturated nitrogen-functionalities on their surface, (2)preparation of composites by dispersing highly metals and metal-complexes on the carbon surface, and (3)investigation of functions of these materials and of mechanisms in such functions.Investigation of preparation methods for carbons and fibrous carbons which contain large amounts of unsaturated nitrogen-functionalities on the surface revealed that it is possible to prepare such highly nitrogen-functionality containing carbons and to control the contents to some extent by using (1)selective dehydrogenation of polyacrilonitrile and controling the activation, and (2)combination of activation with sulfuric acid or sulfur dioxide and treatment with ammonia against active carbons and active carbon fibers. Especially, the latter method is of value to note because of its wide applicability regardless of the kind of carbons. These methods can provi … More de highly stable nitrogen-functionalities and some characteristics which can not be obtained by other methods for the surface modification.These carbons were found to exhibit remarkably high abilitles for de-NOx and de-SOx of flue gas with or without proper pretreatment. Such abilities are much larger than those of usual active carbons, so that further developments should be required.With respect to composites of metal and these carbons, impregnation by using aprotic solvents was found to provide high dispersion of metals. Cu amd Fe composites which were prepared by using chloroform as a solvent can be expected to exhibit high abilities for de-NOx. Noble metals composites are also expected to provide abilities for selective hydrogenation of aromatic hydrocarbons and provide higher durability for ash. Such performances have been imvestigated. Although the expedted interaction between macrocyclic metal complexes and these carbons unfortunately were not obtained completely, some developments in their catalytic abilities were obtained and enhancing methods for the interaction can provide expected performances. The investigation has been in progress. Less

本研究的目的是：(1)制备表面含有大量不饱和氮官能团的碳；(2)在碳表面分散高度金属和金属络合物制备复合材料；(3)研究这些材料的功能及其作用机理。对表面含有大量不饱和氮官能团的碳和纤维碳的制备方法的研究表明，通过(1)聚丙烯腈的选择性脱氢和控制活化，可以制备这种高含氮官能团的碳，并在一定程度上控制其含量。(2)用硫酸或二氧化硫活化和氨气处理相结合的方法来处理活性碳和活性碳纤维。特别是，后一种方法值得注意，因为它无论是哪种碳都具有广泛的适用性。这些方法可以提供…这些碳具有更多的高稳定氮官能团和一些其他表面改性方法所不能获得的特性，无论是否经过适当的处理，这些碳都表现出了非常高的脱氮和脱硫能力。这种能力比通常的活性碳要大得多，因此需要进一步的开发。关于金属和这些碳的复合材料，人们发现使用非质子溶剂浸渍可以提供高分散性的金属。以氯仿为溶剂制备的铜铁络合物有望表现出较高的脱氮能力。贵金属复合材料还有望为芳香烃的选择加氢提供能力，并提供更高的灰分耐久性。这种表演已经被调查过了。尽管大环金属络合物与这些碳之间的加速相互作用并没有得到完全的实现，但它们的催化能力已经取得了一些进展，加强相互作用的方法可以提供预期的性能。调查一直在进行中。较少