Showing papers on "Polyoxometalate published in 1988"

Pillaring of layered double hydroxides (LDH's) by polyoxometalate anions

Abstract: Layered silicate clays (LSC's) intercalated by pillaring polyoxocations are precursors to an important class of microporous catalysts for a large number of reactions, including shape selective petroleum cracking. To date, smectite clays are the only host structures known to be pillarable by purely inorganic oxo ions. In the present work they report the oxo ion pillaring of a new family of lamellar ionic compounds, namely the layered double hydroxides (LDH's).

Carbonylation reaction and catalyst therefor

Abstract: A process and novel catalyst for the carbonylation of one or more of alcohols, ethers and ether alcohols to esters and, optionally, to carboxylic acids. The reaction is effected in the vapor state over a solid catalyst comprising a polyoxometalate anion in which the metal is at least one taken from Group V and VI of the Periodic Chart of the Elements complexed with a cation from a member of Group VIIIA of the Periodic Chart of the Elements. Preferably, the catalyst is deposited on a support that is inert to the reaction. The preferred support is silica.

Pillaring of Layered Double Hydroxides (LDH′s) by Polyoxometalate Anions.

Abstract: Layered silicate clays (LSC's) intercalated by pillaring polyoxocations are precursors to an important class of microporous catalysts for a large number of reactions, including shape selective petroleum cracking. To date, smectite clays are the only host structures known to be pillarable by purely inorganic oxo ions. In the present work they report the oxo ion pillaring of a new family of lamellar ionic compounds, namely the layered double hydroxides (LDH's).