Process for the manufacture of synthetic saponites

Abstract of EP0317006 Process for the preparation of synthetic saponites according to the general formula A@@ +z)/n[(Mg3-yMy) (Si4-xAlx)O10Z2] (II) wherein A represents any metal ion having basic or amphoteric properties, M represents a bivalent metal ion having an ionic radius between 0.050 and 0.085 nm or lithium, Z represents a fluoride moiety, n represents the valency of A, x represents a number between 0.05 and 1.5, y represents a number from 0 to 2.95, and z = y when M = lithium and zero when M represents a bivalent metal ion as defined hereinabove, by reacting under solid state conditions a silica source, an alumina source, a magnesia source, a sodium and/or lithium source, a fluoride source and optionally a further source containing A and/or M metal ions and/or a chloride source, at a temperature between the lowest melting point of any alkali fluoride or chloride which is either present as such or which could be formed under solid state synthesis conditions and a temperature not more than 200 DEG C below said temperature. The saponites (constituting novel materials when M represents Ni, Co or Cu) can be used as (catalyst) carriers, e.g. in the (hydro)isomerisation of hydrocarbons

Process for the manufacture of synthetic saponites

Abstract of EP0317006 Process for the preparation of synthetic saponites according to the general formula A@@ +z)/n[(Mg3-yMy) (Si4-xAlx)O10Z2] (II) wherein A represents any metal ion having basic or amphoteric properties, M represents a bivalent metal ion having an ionic radius between 0.050 and 0.085 nm or lithium, Z represents a fluoride moiety, n represents the valency of A, x represents a number between 0.05 and 1.5, y represents a number from 0 to 2.95, and z = y when M = lithium and zero when M represents a bivalent metal ion as defined hereinabove, by reacting under solid state conditions a silica source, an alumina source, a magnesia source, a sodium and/or lithium source, a fluoride source and optionally a further source containing A and/or M metal ions and/or a chloride source, at a temperature between the lowest melting point of any alkali fluoride or chloride which is either present as such or which could be formed under solid state synthesis conditions and a temperature not more than 200 DEG C below said temperature. The saponites (constituting novel materials when M represents Ni, Co or Cu) can be used as (catalyst) carriers, e.g. in the (hydro)isomerisation of hydrocarbons