Hydrocarbon conversion processes using crystalline manganese phosphate compositions

A hydrocarbon conversion process comprising contacting a hydrocarbon feed with a crystalline manganese phosphate composition under hydrocarbon conversion conditions to give a converted product, the manganese phosphate composition having an extended network and an empirical composition on an anhydrous basis expressed by an empirical formula of:

• (A.sup.a+).sub.v (Mn.sup.b+)( M.sup.c+).sub.x P.sub.y O.sub.x
• where A is a templating agent selected from the group consisting of alkali metals, alkaline earth metals, hydronium ion, ammonium ion, organoammonium ions, silver, copper (II), zinc (II), nickel (II), mercury (II), cadmium (II), and mixtures thereof, "a" represents a weighted average valence of A and varies from 1.0 to 2.0, "v" is the mole ratio of A to Mn and varies from about 0.1 to about 5, "b" is the average valence of Mn and has a value of greater than 3 to about 4, M is a metal selected from the group consisting of Al, Fe.sup.3+, Ga, Sn.sup.4+, Ti, Sb.sup.5+, Ag, Zn, Cu, Ni, Cd, and mixtures thereof, "x" is the mole ratio of M to Mn and varies from 0 to about 3.0, "c" is the weighted average valence of M and varies from about 1.0 to about 5.0, "y" is the mole ratio of P to Mn and varies from about 0.10 to about 5.0 and "z" is the mole ratio of O to Mn and has a value determined by the equation
• z=1/2(a "v+b+x" c+5y).