Pillared interlayered clay

New Adsorbent Materials. SihcaUte and other hydrophobic molecular sieves, the new family of AlPO molecular sieves, and steadily increasing families of other new molecular sieves (including stmctures with much larger pores than those now commercially available), as well as new carbon molecular sieves and pillared interlayer clays (PILCS), will become more available for commercial appHcations, including adsorption. Adsorbents with enhanced performance, both highly selective physical adsorbents and easily regenerated, weak chemisorbents will be developed, as will new rate-selective adsorbents. 

The hydroamination of alkenes has been performed in the presence of heterogeneous acidic catalysts such as zeolites, amorphous aluminosilicates, phosphates, mesoporous oxides, pillared interlayered clays (PILCs), amorphous oxides, acid-treated sheet silicates or NafioN-H resins. They can be used either under batch conditions or in continuous operation at high temperature (above 200°C) under high pressure (above 100 bar). 

Pillared interlayer clays (PILCs), 1 655 Pill-box cell, 13 417-419 Pilling, reduced, 11 211 Pillow cases, number produced from one bale of cotton, 8 133t Pilot plant(s), 19 457-471... 

Pillared interlayered clays (PILCs), nanostructured adsorbents, 120 Platinum, dendrimers, 14-15 Polarizability... 

Cheng J, Yu SM, Zuo P (2006) Horseradish peroxidase immobilized on aluminum-pillared interlayered clay for the catalytic oxidation of phenolic wastewater. Water Res 40 283-290... 

The success of the HZSM-S catafyst is no doubt linked to the low coke forming tendency of this particular zeolite. Other acidic zeolites such as HY are initia% active but deactivate very r idly due to coke depo on. Bradley and Kydd [116] investigated the performance of seve pillar interlayered clay miner and although the Ga pillared montmorihonite was found to be the most effective it had a nnich lower activity than Ga/HZSM-5. 

Pillared interlayered clays (PILC) can be regarded as nanocomposites, in which oxide particles of nano- and subnanometer scales are incorporated into the interlayer space of two-dimensional aluminosilicates [1]. In recent years, much attention has been focused on this new type of materials with large heights of pillars, because they provide larger pores in comparison to conventional zeolites. Smectites pillared with transition metal oxides (e.g. Cr, Fe, Ti) are of particular interest because the incorporated phases have themselves catalytic properties. Such solids are claimed to possess a remarkable activity in a notable number of reactions [2,3]. 

Since the first commercial announcements of Pillared Interlayered Clays (PILC) in 1979 (11. much interest has focused on these materials as potential sources of new materials in sorption, separations and catalysis. In this review I will attempt to summarise some of the recent developments that continue to make PILCs an exciting and opportunistic research area for the petroleum oriented industries. These developments can conveniently be divided into the following areas ... 

Vaughan, D.E.W., 1988. Recent Developments in Pillared Interlayered Clays. In ACS Symp. Ser. Perspectives in Molecular Sieve Science, 3 308. 

Since 1973, pillared interlayered clays (PILCS) have been extensively studied because they can be attractive as potential catalysts for the conversion of heavy fuels as shown by several reviews on the subject (1-4). 

Jie, G. J., M. E. Ze, and Y. Zhiquing. 1986. A class of pillared interlayered clay molecular sieve products with regularly interstratified mineral structure. Eur. Pat. Appl. 197012. 

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