Effects of Pd-Cu composition and support on catalytic activity for nitrate decomposition with Pd-Cu catalyst and hydrazine

Kadowaki, Haruhiko ; Kato, Atsushi; Tomioka, Osamu ; Meguro, Yoshihiro  ; Takahashi, Kuniaki 

We studied effects of Pd-Cu composition and support material on catalytic activity in the nitrate decomposition with Pd-Cu catalyst and hydrazine as a liquid reductant. It was found that Pd was alloyed with Cu in the Pd-Cu catalyst prepared by electroless deposition method and the Pd-Cu surface composition was strongly influenced by the support material. The Pd-Cu composition giving the maximal catalytic activity for decomposition of nitrate ion and nitrite ion as intermediate was determined in the denitration with the Pd-Cu loaded carbon catalysts. And also it was found that the catalytic activity varied according to the support material.