| http://www.w3.org/ns/prov#value | - It is presently preferred to produce Mx Ti.sup.(III)Ti.sup.(IV)y O.sub.(x+3+4y)/2 by heating TiO2 in a reducing atmosphere such as, for example, in the presence of hydrogen or other reducing agents such as sodium borohydride, potassium borohydride, carbon monoxide, an alkylboron compound, or combinations of two or more thereof The Mx Ti.sup.(III)Ti.sup.(IV)y O.sub.(x+3+4y)/2 -containing catalyst c
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