The progress in linear chain clusters of low - valent platinum group metals is briefly reviewed 本文就有关线性低价铂系金属簇合物的研究进展作一简述。
Dechlorination of chlorinated aliphatic compounds by micro - scale al - zn - mg fe powders as advanced zero - valent iron 复合粉体降解水体中氯代有机物污染的研究
Discussion on the applicability of permeable reactive zero - valent iron barriers to the remediation of groundwater around a uranium tailings site 铀矿冶设施退役治理的国际交流与技术合作
Co contents will exist as zero - valent when it was prepared by thermal reduction . but it was not able to resist corrosion , either 用氢气在800高温下热还原的方法制备的co催化剂能够得到单质的co ,但是此催化剂的抗腐蚀性能也很差。
The mo catalyst and the co catalyst prepared by impregnation reduction did not have zero - valent metals , the catalysts were not able to resist corrosion 以硼氢化纳( nabh4 )为还原剂的浸渍还原法制备的mo 、 co催化剂并不能得到单质的金属,而且抗腐蚀性能不好。
It is demonstrated by xrd and chemical analysis that high valent compounds such as ni3o4 , nio2 , ni2o3 besides - niooh , y - niooh may be formed on electrode surface 黑镍的产物可能包括p一niooh 、丫一iooh ，而且还可能包含其它的高价镍化合物，比如ni3o4 ， nizo3 ， nioz等。
Complexes 3 and 4 are two cage - like mixed - valent polyoxovanadates , which possess the same oxo vanadium clusters composed of spherical [ viv8vv7036c1 ] 6 " cage with a cl " ion encapsulated 化合物3和4是两个笼形混价多氧钒酸盐。它们具有相同的包裹着cl -离子的笼形[ viv8vv7o36cl ] 6 -钒氧簇。
On the basis of distinctions of verbal valency , verbs used within oracle inscriptions can be divided into the following four categories : zero - valent verbs , monovalent verbs , bivalent verbs and trivalent verbs 摘要甲骨文中的动词可以根据其配价的不同分成以下四类，即零价动词、一价动词、二价动词、三价动词。
This paper proposed a convenient way for producing disulfides , along which disulfides can be readily prepared in moderate to good yields via the reduction of alkylthiocyanates by the low - valent titanium reagent in thf at 0 在四氢呋喃、 0反应条件下，低价钛试剂能容易地还原硫氰酸酯生成相应的二硫化物，得到中等至良好的产率
