CO 2 hydrogenation to light olefins is key for reducing environmental emissions and creating sustainable energy. Bifunctional oxide–zeolite (OX–ZEO) catalysts are widely used in this area. Metal ...oxides, crucial for CO 2 adsorption and H 2 dissociation, need careful selection and optimization. This paper presents a bifunctional catalyst where Ga 2 O 3 is loaded onto mZrO 2 (monoclinic zirconia) (Ga 2 O 3 -mZrO 2 ) using citric acid complex method and combined with SAPO-34. Our study demonstrates that the loading method can significantly improve the adsorption capacity of the catalyst for CO 2 and had demonstrated impressive catalytic performance compared to common preparation methods. Further, Ga 2 O 3 -mZrO 2 , in comparison to Ga 2 O 3 loaded onto tZrO 2 (tetragonal zirconia) (Ga 2 O 3 -tZrO 2 ), has a stronger ability to produce light olefins. The catalyst achieves 84.1% selectivity for C 2 = –C 4 = , 20.2% CO 2 conversion, and 45.3% CO selectivity, remaining stable over 100 hours. This offers a novel method for designing highly active Zr-based oxides for effective CO 2 conversion.
CO
2
hydrogenation to light olefins is key for reducing environmental emissions and creating sustainable energy. Bifunctional oxide-zeolite (OX-ZEO) catalysts are widely used in this area. Metal ...oxides, crucial for CO
2
adsorption and H
2
dissociation, need careful selection and optimization. This paper presents a bifunctional catalyst where Ga
2
O
3
is loaded onto mZrO
2
(monoclinic zirconia) (Ga
2
O
3
-mZrO
2
) using citric acid complex method and combined with SAPO-34. Our study demonstrates that the loading method can significantly improve the adsorption capacity of the catalyst for CO
2
and had demonstrated impressive catalytic performance compared to common preparation methods. Further, Ga
2
O
3
-mZrO
2
, in comparison to Ga
2
O
3
loaded onto tZrO
2
(tetragonal zirconia) (Ga
2
O
3
-tZrO
2
), has a stronger ability to produce light olefins. The catalyst achieves 84.1% selectivity for C
2
=
-C
4
=
, 20.2% CO
2
conversion, and 45.3% CO selectivity, remaining stable over 100 hours. This offers a novel method for designing highly active Zr-based oxides for effective CO
2
conversion.
This study synthesized Ga
2
O
3
-mZrO
2
/SAPO-34 for CO
2
hydrogenation to light olefins, demonstrating the efficacy of citric acid complexation and mZrO
2
support. Achieving 84.1% C
2
=
-C
4
=
selectivity, it offers a novel strategy for active oxide preparation.
CO2 hydrogenation to light olefins is key for reducing environmental emissions and creating sustainable energy. Bifunctional oxide–zeolite (OX–ZEO) catalysts are widely used in this area. Metal ...oxides, crucial for CO2 adsorption and H2 dissociation, need careful selection and optimization. This paper presents a bifunctional catalyst where Ga2O3 is loaded onto mZrO2 (monoclinic zirconia) (Ga2O3-mZrO2) using citric acid complex method and combined with SAPO-34. Our study demonstrates that the loading method can significantly improve the adsorption capacity of the catalyst for CO2 and had demonstrated impressive catalytic performance compared to common preparation methods. Further, Ga2O3-mZrO2, in comparison to Ga2O3 loaded onto tZrO2 (tetragonal zirconia) (Ga2O3-tZrO2), has a stronger ability to produce light olefins. The catalyst achieves 84.1% selectivity for C2=–C4=, 20.2% CO2 conversion, and 45.3% CO selectivity, remaining stable over 100 hours. This offers a novel method for designing highly active Zr-based oxides for effective CO2 conversion.
The Yangtze finless porpoise,a subspecies of narrow-ridged finless porpoise,is only distributed in the middle and lower reaches of Yangtze River and two large river-connected lakes-Poyang and ...Dongting Lakes. With the depletion of fish stocks in Yangtze River,prey availability has become the most important factor determining the survival of the finless porpoise. However,the community structure of the fish in primary habitat of the finless porpoise is far from being fully understood. In the mainstem of Yangtze River,the highest density of porpoises was observed in the Anqing section. Several field surveys in the Anqing section have indicated that the confluence of Yangtze and Wanhe Rivers is one of the primary habitats of the porpoise. Therefore,the confluence and its adjacent regions were selected as our study area,and field surveys were conducted monthly from September 2013 to August 2014. A total of five transects were set. The length of each transect and interval between transects were 400 and 200 m,respect
