烟酰胺铬（Ⅲ）配合物的合成及其热分解脱水非等温动力学研究  

SYNTHESIS AND STUDIES ON THE NON-ISOTHERMAL KINETICS OF THERMAL DEHYDRATION OF COMPLEX OF CHROMIUM(Ⅲ) WYITH NICOTINAMIDE

作　　者：周保学[1] 王大庆[1] 贾元江 尚树川[1] 高占亭[1] 

机构地区：[1]山东师范大学化学系,山东师范大学测试中心,山东师范大学人事处.

出　　处：《无机化学学报》1995年第2期147-151,共5页Chinese Journal of Inorganic Chemistry

摘　　要：本文合成了铬（Ⅲ）的一个新的双核配合物Ｃｒ２（Ｎｉｃａ）４Ｃｌ５（ＯＨ）（Ｈ２Ｏ）６（Ｎｉｃａ表示烟酰胺．通过元素分析、摩尔电导、红外光谱、热重．对该配合物进行了表征，表明烟酰胺以吡啶氮与铬（Ⅲ）配位．文章对该配合物进行了热分解脱水非等温动力学研究，运用Ａｃｈａｒ法与Ｃｏａｔｓ—Ｒｅｄｆｅｒｎ法，推断出该热分解脱水反应为二级反应．其动力学方程为ｄα／ｄｔ＝Ａｃ（－Ｅ／ＲＴ）（１－α）２，动力学补偿效应表达式为ＩｎＡ＝０．２９９２Ｅ－１０．５６８２．A new dinuclcar or(Ⅲ)-Cr(Ⅲ) complex Cr2(Nica)4cl,(OH)·(H2O)6(Nica denotes nicotinamide) was prepared, its component was assigned on the basis of clement analysis, molar conductance, IR, UV and TG. Pyridine ring nitrogen-bond chromium(Ⅲ) complex has been Observed in the ligand of Nica. The kinetics of thermal dehydration was studied under non-isothermal condition. The kinctic data were analyzed by means of the Acbar method and the Coats-Redfern method. The results show that thermal dehydration reaction at first step is a second order reaction. The kinetic equation can be expressed as: dα/ dt= Ae(-B/AT)·(1-α)2.The mathematical expression of the kinetic compensation effect is found to be:InA = 0.2992E-0.5682.

关 键 词：铬 配合物 烟酰胺 热分解 非等温动力学 

分 类 号：O614.611[理学—无机化学]