Determination of Trace Tron(Ⅲ) by Anti-catalytic Spectrophotometry—Iron-Potassium Pensulfate-Methyl Red System;
负催化光度法测定痕量铁(Ⅲ)—铁—过硫酸钾—甲基红体系
In this paper, the mechanism using the negative catalyst to increase the firing temperature of Cd(S,Se) was studied.
文探讨了利用高温分解抑制剂 (即负催化剂 )提高硫硒化镉耐火度的机理 ,并辅以熔块保护法配制成烧成范围在 1 0 60℃～ 1 3 4 0℃之间系列大红色釉 ,提高了镉硒大红色釉的烧成温度 ,拓宽了镉硒大红色釉的烧成范围。
TDC yield was 86% at 170℃ for 3 h when using AC supported catalyst.
结果表明,造成活性炭负载乙酸锌催化剂失活及其与表面改性载体负载催化剂活性差异的原因是由于表面Zn所处的化学环境发生了改变,从而影响了TDC合成反应的催化活性,即随着Zn2p结合能的增加,Zn周围电子云密度降低,催化剂活性降低。
A supported catalyst was synthesized from bis[4-(4-amino-3,5-diethylbenzyl)-2,6-diethylphenyl]iminoacenaphthenyl dichloronickel(NiLCl_2)prepared and supported in combination with titanium tetrabromide on silicon dioxide-magnesium chloride.
合成了配合物N,N′-二[4-(4-氨基-3,5-二乙基苄基)-2,6-二乙基苯基]苊二亚胺二氯化镍(NiLCl_2),将其与TiCl_4复合负载在SiO_2/MgCl_2上制得负载催化剂。
The effects of catalyst, solvent, pH of system and catalyst levels were discussed.
考察了催化剂类型、溶剂、体系pH、催化剂负荷等对反应的影响。