01616nas a2200193   4500008004100000022001400041245014200055210006900197260007300266300001400339490000600353520080100359653003001160653002901190653003201219100002601251700001401277856013101291       2008                        eng d  a1566-736700aGaAlCl(x)-grafted Mont.K-10 clay: highly active and stable solid catalyst for the friedel-crafts type benzylation and acylation reactions0 aGaAlClxgrafted MontK10 clay highly active and stable solid catal  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a1101-11050 v93 a<p>A liquid phase reaction of anhydrous GaCl(3) and AlCl(3) with the surface hydroxyl groups (with HCl evolution) of Mont. K-10 clay in dry CCL(4) under reflux resulted in a novel GaAlCl(x),-grafted Mont.K-10 catalyst [with Cl/(Ga + Al) = 1]. The catalyst showed high activity and stability in the Freidel-Crafts type benzylation and benzoylation (by benzyl chloride and benzoyl chloride, respectively) of benzene, naphthalene and substituted benzenes, even in the presence of moisture. It also showed good activity for the benzoylation of nitrobenzene (i.e. even in the presence of strong electron withdrawing group, like nitro group, attached to the benzene ring). The catalytically active surface species in the catalyst are -(O)(2)-Ga(or Al)Cl. (c) 2007 Elsevier B.V. All rights reserved.</p>10abenzoylation of aromatics10abenzylation of aromatics10aGaAlCl(x)-grafted Mont.K-101 aChoudhary, Vasant, R.1 aJha, Rani  uhttps://library.ncl.res.in/content/gaalclx-grafted-montk-10-clay-highly-active-and-stable-solid-catalyst-friedel-crafts-type-0