Performance of γ-Ga2O3-Al2O3 solid solutions prepared by spray pyrolysis for CH4-SCR of NO

Characterization of Structural Disorder in γ-Ga2O3

“…The catalytic chemistry of γ-Al 2 O 3 has been widely investigated, and indeed its use as a catalyst support is commonplace . The solid solution γ-Ga 2 O 3 –γ-Al 2 O 3 has also been investigated for specific catalysis applications, and it is believed that preferential occupation of the tetrahedral sites by gallium leads to unique properties for the surface aluminum, such as in methane-selective catalytic reduction of NO, − and in the dehydrogenation of propene. − γ-Ga 2 O 3 has itself been studied for various applications in catalysis and compared with other Ga 2 O 3 polymorphs; for example, in the steam reforming of methanol and the photocatalytic degradation of volatile organics. , Recently Lueangchaichaweng et al have reported the use of gallium oxide nanorods, largely the γ polymorph, as highly effective catalysts for epoxidation reactions of alkenes . Interesting optical properties have also been a focus of recent attention for γ-Ga 2 O 3 : Chen et al.…”

Effect of O2 on reduction of NO2 with CH4 over gallium-modified ZnAl2O4 spinel-oxide catalyst by first principle analysis

“…In addition, using CH 4 as a reducing agent has been addressed in Refs. [23][24][25]. Watanabe et al [23] found that ␥-Ga 2 O 3 -Al 2 O 3 solid solutions prepared by spray pyrolysis exhibits high performance for selectivity catalytic reduction of NO x .…”

“…[23][24][25]. Watanabe et al [23] found that ␥-Ga 2 O 3 -Al 2 O 3 solid solutions prepared by spray pyrolysis exhibits high performance for selectivity catalytic reduction of NO x . Boix et al [24] investigated the catalytic reduction of NO x with CH 4 on CoMOR washcoated monolithic catalysts in the presence steam and excess oxygen, and found that water decreases the conversion of NO x to N 2 when CH 4 is the reducing agent.…”

SO2 promoted alkali metal doped Ag/Al2O3 catalysts for CH4-SCR of NOx

“…Currently, various catalysts synthesized by zeolites (ZSM-5, HZSM, FER, and HMOR) [3] and mixed oxide (Al 2 O 3 , TiO 2 , and ZrO 2 ) with active metals Pt, Rh, Pd, Ir, Co and Cu [3][4][5][6][7] have been reported for the title reaction. However, the performance and durability of these catalysts are still insufficient for practical applications.…”