In this work,the catalytic performance of vanadia-molybdena loaded on TiO_(2),MgO,ZSM-5,NaY and Mordenite was investigated in the selective oxidation of 2-methylnaphthalene(2-MN)to 2-naphthaldehyde(2-NA).Results show ...In this work,the catalytic performance of vanadia-molybdena loaded on TiO_(2),MgO,ZSM-5,NaY and Mordenite was investigated in the selective oxidation of 2-methylnaphthalene(2-MN)to 2-naphthaldehyde(2-NA).Results show that strong interactions between supports(TiO2,ZSM-5)and active components can promote the dispersion of active component.Monolayer VOx and MoOx are the main form on the catalyst surface,which is beneficial to the 2-NA selectivity.However,the corresponding weak interactions between Mordenite and active components may lead to the production of oxide crystals and the separation of active components,thus reducing the 2-NA selectivity.Due to the high Na content,new crystal NaVMoO6 forms on the NaY surface,which is inactive in the reaction.For V-Mo/TiO2,V and Mo can be inserted into the TiO2 lattice,changing the electronic structures of active components and support and improving the activity of surface oxygen species.This investigation highlights an important consideration on supports properties when designing supported catalysts.展开更多
The practice of eating insects has been documented for a long time.With obvious economic and environmental advantages,edible insects are in the spotlight recently due to their enormous potential in multiple industries...The practice of eating insects has been documented for a long time.With obvious economic and environmental advantages,edible insects are in the spotlight recently due to their enormous potential in multiple industries.A number of research has been conducted to maximize their value,but concerns have been raised for the food security.In this review,we compared the characteristics of edible insects with other traditional protein sources.The progress of modern entomophagy was introduced.The benefits and risks of eating insects were summarized.Additionally,the shortcoming of current production were discussed.Feasible ways and strategies were proposed to promote the consumption of edible insects.展开更多
基金Henan Province Science and Technology Research Project(232102321041).
文摘In this work,the catalytic performance of vanadia-molybdena loaded on TiO_(2),MgO,ZSM-5,NaY and Mordenite was investigated in the selective oxidation of 2-methylnaphthalene(2-MN)to 2-naphthaldehyde(2-NA).Results show that strong interactions between supports(TiO2,ZSM-5)and active components can promote the dispersion of active component.Monolayer VOx and MoOx are the main form on the catalyst surface,which is beneficial to the 2-NA selectivity.However,the corresponding weak interactions between Mordenite and active components may lead to the production of oxide crystals and the separation of active components,thus reducing the 2-NA selectivity.Due to the high Na content,new crystal NaVMoO6 forms on the NaY surface,which is inactive in the reaction.For V-Mo/TiO2,V and Mo can be inserted into the TiO2 lattice,changing the electronic structures of active components and support and improving the activity of surface oxygen species.This investigation highlights an important consideration on supports properties when designing supported catalysts.
基金sponsored by the Special Fund Project for Basic Scientific Research of JAAS in 2019(Supporting Key Talents)(ZX(19)3002).
文摘The practice of eating insects has been documented for a long time.With obvious economic and environmental advantages,edible insects are in the spotlight recently due to their enormous potential in multiple industries.A number of research has been conducted to maximize their value,but concerns have been raised for the food security.In this review,we compared the characteristics of edible insects with other traditional protein sources.The progress of modern entomophagy was introduced.The benefits and risks of eating insects were summarized.Additionally,the shortcoming of current production were discussed.Feasible ways and strategies were proposed to promote the consumption of edible insects.
