preparation and thermal decomposition kinetics of copper(ii) complex with 1-(6-hydroxynaphthalen-2-yl)butane-1,3-dione

نویسندگان

dunjia wang

yanfang kang

lianying lu

چکیده

a complex of cu(ii) with 1-(6-hydroxynaphthalen-2-yl) butane-1,3-dione (hnbd) was synthesized and characterized by elemental analysis, ir, uv and dta-tg-dtg techniques.    ir spectra as well as uv-visible absorption measurements indicated that cu(ii) ion was coordinated to the hnbd ligand. the tg-dta-dtg curves showed that thermal decomposition of the anhydrous complex was a two-stage process and the residue of decomposition was cuo. the decomposition mechanism and non-isothermal kinetic parameters of the complex were obtained from the analysis of tg-dtg data using three kinds of integral methods (coat-redfern equation, hm equation, mkn equation) and differential method (achar equation). the results indicate that the kinetic equations with parameters describing the thermal decomposition reaction are  with e = 417.78 kj/mol, a = 3.53´1038/s, ds = 487.55 j/k·mol and n =3 for the first stage,  with e = 88.76 kj/mol, a = 4.74´105, ds = -144.59 j/k/mol  and n =2 for the second stage.

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عنوان ژورنال:
iranian journal of chemistry and chemical engineering (ijcce)

ناشر: iranian institute of research and development in chemical industries (irdci)-acecr

ISSN 1021-9986

دوره 32

شماره 1 2013

کلمات کلیدی
[ ' t h e r m a l d e c o m p o s i t i o n k i n e t i c s ' , ' d t a ' , ' t g ' , ' d t g ' , ' c u ( i i ) c o m p l e x ' , 1 , ' ( 6 ' , ' h y d r o x y n a p h t h a l e n ' , 2 , ' y l ) b u t a n e ' , 1 , 3 , ' d i o n e ' ]

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