Partial oxidation of n-butane over ceria-promoted nickel/calcium hydroxyapatite

Abstract

LPG has good infrastructure and is anticipated to be used for production of hydrogen, and n-butane which constitutes a main component of LPG for vehicles. Partial oxidation (POX) of n-butane is investigated in this research by employing ceria-promoted Ni/calcium hydroxyapatite catalysts (Ce x Ni 2.5 /Ca 10 (OH) 2 (PO 4 ) 6 x=0.1-0.3) which have recently been reported to exhibit good catalytic performance in POX of methane and propane. The experiments were carried out with changing ceria content, O 2 /n-C 4 H 10 ratio and reaction temperature. As the O 2 /n-C 4 H 10 ratio increased up to 2.75, the n-C 4 H 10 conversion and H 2 yield increased and the selectivity of methane and other hydrocarbons decreased. But with O 2 /n-C 4 H 10 =3.0, the n-C 4 H 10 conversion and H 2 yield decreased. Ce 0.1 Ni 2.5 /Ca 10 (OH) 2 (PO 4 ) 6 showed the highest n-C 4 H 10 conversion and H 2 yield on the whole. In durability tests, higher hydrogen yield and better catalyst stability were obtained with the O 2 /n-C 4 H 10 ratio of 2.75 than with the ratio of 2.5.

Conversão de etanol com o uso de catalisadores hidroxiapatita substituídos com níquel e cobre

“…O banho termostático realizado foi em torno de Diferentemente, Kwak desenvolveu a síntese com a mistura inicial do precursor de níquel com o hidrogenofosfato e somente após misturou com a solução precursora de cálcio. (KWAK et al, 2008).…”