Zhumadullaev, D., Kornauhova, N., Zakarina, N. and Niyazbaeva, A. 2012. Effect of PW12–GPK on the acid characteristics of Ni-, Pd- and Pt- catalysts deposited onto pillared Al montmorillonite. Chemical Bulletin of Kazakh National University. 65, 1 (Mar. 2012), 253-256. DOI:https://doi.org/https://doi.org/10.15328/chemb_2012_1253-256.