Results from pilot tests of microspherical aluminochromium KDI-M catalyst mixed with IM-2201 in a
large-scale unit (Nizhnekamskneftekhim) for iso-butane dehydrogenation are discussed. Compared to KDI catalyst,
its modified analogue KDI-M is more active and selective; the optimized grain-size composition and
mechanical strength ensures higher yields of iso-butylene and longer nonstop operation (up to 400 days) of the
reactor unit
