Tishreen University Journal for Research and Scientific Studies - Basic Sciences Series Vol. ( ) No. ( )
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1 Tishreen University Journal for Research and Scientific Studies Basic Sciences Series Vol. No. BET XRF (XRD) (XRF) K (H O ) X.R.D, BET, X.R.F ١٠٥
2 Tishreen University Journal for Research and Scientific Studies Basic Sciences Series Vol. No. Influence of Aluminum pillared on the PhysicoChemical properties of Natural Clay Dr. Mohamed Nawras Hassuon * (Received ٣١ / ٧ / ٢٠٠٧. Accepted ١١/١١/٢٠٠٧) ABSTRACT We studied a sample of natural clay from Abha region in Saudi Arabia. This sample was named Cly H O. The sample was treated with aluminum polymer solution to concentrate the aluminum pillared between clay foliolates and named Cly Al. Two samples were studied using X.R.F and X.R.D methods. The specific surface area was determined by BET method using gas nitrogen adsorption at K. We studied catalytic properties of samples. The chemical composition of clay was determined by X.R.F method. We note that the specific surface area was increased, and the samples have a catalytic activity in the decomposition reaction of hydrogen peroxide. Key Words: Clay, aluminum pillared, X.R.D, BET, X.R.F Associate Professor, Department of Chemistry, Faculty of Sciences, Tishreen University, Lattakia, Syria. ١٠٦
3 Tishreen University Journal. Bas Sciences Series (Clay) [ (OH) H O] (H /CO) MnO NaOH( M) AlCl ( M) [ (OH) H O] C o /Al = meq/g ١٠٧
4 Al Ca ++,Na Philips XRD Å α ) ( ) ( d (XRAYfluorescence) XRF.ppm Gemini.K C o X.R.D, BET, X.R.F Cly(Al) Cly(H O) XRF CaO K O Na O (CaO, K O, Na O) ١٠٨
5 Tishreen University Journal. Bas Sciences Series ph AlCl Fe Mg Al ph % % (1) (2) % (Si ) IV (Al ) VI O (OH) Pyrophyllite.g/Cell Pyrophyllite g 2/Cell 100 ١٠٩
6 g /28 8 Si g Si g Si Fe Al Mg IV Si Al Fe Mg VI IV VI I Si A l Fe Mg O OH M (K + Ca Na ) M charg/cell.ppm meq/g XRD (d) XRD d :4.1,3.31, 2.56,1.65,1.63 Angle d value, Å XRD Angle d value, Å ١١٠
7 Tishreen University Journal. Bas Sciences Series ClyH 2 O XRD BET BET K x S(BET) m /g x.ml g ١١١
8 t lnv /(V V t ) t, min V t, ml (V V t ), ml ln V /( V V t ) = x t, min V t, ml (V V t ), ml ln V /( V V t ) = X 0.8 (b) 0.8 (a) 0.6 y = 0.062x 0.6 y = 0.04x Y 0.4 Y t,min t,m in (a) H O t Y=ln V /( V V t ) (b) ١١٢
9 Tishreen University Journal. Bas Sciences Series t ln V /( V V t ) t, min V t, ml (V V t ), ml ln V /( V V t ) = x t, min V t, ml (V V t ), ml ln V /( V V t ) = ١١٣
10 1 (b) 0.8 (a) 0.8 y = x 0.6 y = x Y Y t,m in t,min (a) clyal H O Y=ln V /( V V t ) (b) k = min k = min ( k 1 E 1 1 a ln k 2 R T 2 T1 E = ) Cly Al E = k.j/mol k.j/mol w C t n t H 2O2 a. w mol / sec g n H O ( C) VO 2 ( ) n t H 2 2O ( C) ( C) n H O ( C) C a E a, k.j/mol ١١٤
11 Tishreen University Journal. Bas Sciences Series. TIGHIT, D. Preparation etracterisssation de catalyseurs de craquages obtenus a partir d argiles. These d Etat, Universite de Montpellier,.. SCHUTZ,A. Preparetion,characterization,proprteces physicochemiques et catalytiques des smeectites hydroxylaluminiques,these de doctorat,univer.catholique de lovaina(belgique),,.. JOHANSSON, G. On the crystal structure of some basic aluminum salts. Acta Chem, Scand.,Vol... VANDAMME,H.;HASSOUN,N.;BERGAYA,F. Nouveaux catalyseurs a Bas De Laponite ponte conversion sel Projet De Brevet N : FR... RUSEK,J.J. New decomposition catalysts and characterization techniques for rocketgrade hydrogen peroxide. J. of propulsion and power. Vol..... BRUCH,R. ; WARBURTON, C.T. Pillared clays demetallisation catalysts. Applied catalysis..,.. GOPAL,S.; SMIRNIOTIS,P.G. Pt/HZSM as catalyst for the ١١٥
12 hedroisomerisation of C C nalkanes and simultaneous saturation of benzene. Applied catalysis A:General.... RAHEB,I. Investigation of the properties of Syrian ore containing zeolite. Tishreen University Journal for Studies and Scientific ResearchBasic Science, Vol.,.. DOOCEY,D.J.; SHARRATT,P.N.; CUNDY,C.C.; PLAISTE,R.J. Zeolitemediated advanced oxidation model chlorinated phenolic catalysis. Institution of chemical engineers. Vol.,.issu:B,.. MUCHO,V.; OTAHAL,B. ; SILBER,R. Catalytic activity of NiOZnO mixed catalysts in H O decomposition. Radiation physics and chemistry. Vol.. ١١٦
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