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Cracking Catylists from Hectorit intercalated with mixed cohydrolysis La-Zr). | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 8, Issue 1, 2008, Pages 385-394 PDF (0 K) | ||
| Authors | ||
| ; ; Abbas M. Bashi | ||
| Abstract | ||
| Abstract: College of science /department of chemistry/kerbala university Hectorite clay laminated structure bridged by metallic oxides selected from oxides of Lanthanum & Zirconium containing 25 to 40% of an oxide of metal of the group of Lanthanum like cerium ,La,Gd, the presence of Lanthanum and cerium improves the thermal resistance during a dry calcinations or even under humid air the clays can be used as catalyst during conversion of hydrocarbons. Introduction: Hectorite clay laminated structure bridged by metallic oxides selected from oxides of Lanthanum & Zirconium containing 25 to 40% of an oxide of metal of the group of Lanthanum like cerium the presence of Lanthanum and cerium improves the thermal resistance during a dry calcinations or even under humid air the clays can be used as catalyst during conversion of hydrocarbons. Introduction : Clays are among the most important constituents of the earth crust .clays of smectite type such as bentonite montmorillionite , beidellite and hectorite have layered structure. The sheet that constituents the mineral is called dioctahedral , and comprises an octahedral layer of aluminum surrounded by tow tetrahedral layers of silicon the cohesion between the layers is ensured by pooling oxygen atoms. | ||
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