Previously,the once-through CO_(2)chemical absorption process by biogas slurry was experimentally verified to offer the unique advantages like low energy consumption,cost-effectiveness,and feasibility of CO_(2)fixatio...Previously,the once-through CO_(2)chemical absorption process by biogas slurry was experimentally verified to offer the unique advantages like low energy consumption,cost-effectiveness,and feasibility of CO_(2)fixation in plants.However,this technology also faces some challenges and limitations,including a low CO_(2)absorption rate and performance.To improve the effectiveness and reliability of this innovative carbon capture,utilization,and storage(CCUS)technology,this study proposes a novel method to enhance the CO_(2)absorption performance without affecting agricultural applications of CO_(2)by mixing biogas slurry with biomass ash as the green CO_(2)absorbent.The results indicate that when the solid-liquid mass ratio of biomass ash to biogas slurry is 5:10,the CO_(2)loading of the biomass ash and biogas slurry mixture(BA-BS)reaches 936.7±59.1 mmol/kg.Furthermore,the pH of the BA-BS remains stable at 6.9,meeting the rhizosphere pH requirements for plant cultivation.The CO_(2)absorption of the BA-BS liquid phase,referred to as improved biogas slurry(IBS),reaches its maximum at 230.4±3.5 mmol/L,which is 126.8%higher than that of the unimproved biogas slurry.The nitrogen content in the BA-BS solid phase,calling improved biomass ash(IBA),also reaches its maximum at 4.24±0.74 mg/g,thereby expanding the agricultural utilization of biomass ash.The most reasonable and effective way of utilizing CO_(2)-rich mixed biogas slurry and biomass ash involves use IBA as the base fertilizer for tomato cultivation,supplemented later with IBS to promote growth.This optimal application allows for substantial utilization of CO_(2),introduced into the tomato cultivation environment by IBA and IBS.The carbon fixation of a single tomato has improved by 108.2%.This study thus provides a feasible solution for high-value negative carbonization of biogas slurry and biomass ash.展开更多
Cycloaddition of CO_(2) with aziridines is an important reaction to obtain high-value products.Porous MOFs can catalyze this reaction,but co-catalysts are still necessary to improve the catalytic performance.Such a re...Cycloaddition of CO_(2) with aziridines is an important reaction to obtain high-value products.Porous MOFs can catalyze this reaction,but co-catalysts are still necessary to improve the catalytic performance.Such a reaction catalyzed by MOFs-based materials without co-catalyst has not been reported hitherto.Herein,a porous and stable three-dimensional(3D)framework{[Ni(DCTP)]·6.5DMF}_(n)(1)with a large Langmuir surface area of 3,789 m^(2)/g was synthesized,which displayed high I2 adsorption ability up to 731.0 mg/g and could release it reversibly.Additionally,it exhibited a high CO_(2) adsorption capacity of 104.0 cm^(3)/g at 273 K.The investigation results revealed 1 could effectively catalyze the cycloaddition of CO_(2) and aziridines in the absence of additional co-catalyst,and it could maintain the catalytic activity after five cycles.Furthermore,1 also exhibited high catalytic activity for the gram-scale experiment.Importantly,it is the first MOF material as a heterogeneous catalyst for the conversion of CO_(2) and aziridines without co-catalyst.展开更多
基金funded by the National Natural Science Foundation of China(Nos.52076101,32360335)the Knowledge Innovation Program of Wuhan-Basic Research(No.2023020201010108)+3 种基金the Fundamental Research Funds for the Central Universities(No.2662023GXPY001)the High-level Talents Scientific Research Start-up Fund Project of Yulin University(No.2023GK47)the“New Star of Science and Technology”Talent Program of Yulin(No.CXY-2022-137)the Young Talent Fund of Association for Science and Technology in Yulin(No.20230514)。
文摘Previously,the once-through CO_(2)chemical absorption process by biogas slurry was experimentally verified to offer the unique advantages like low energy consumption,cost-effectiveness,and feasibility of CO_(2)fixation in plants.However,this technology also faces some challenges and limitations,including a low CO_(2)absorption rate and performance.To improve the effectiveness and reliability of this innovative carbon capture,utilization,and storage(CCUS)technology,this study proposes a novel method to enhance the CO_(2)absorption performance without affecting agricultural applications of CO_(2)by mixing biogas slurry with biomass ash as the green CO_(2)absorbent.The results indicate that when the solid-liquid mass ratio of biomass ash to biogas slurry is 5:10,the CO_(2)loading of the biomass ash and biogas slurry mixture(BA-BS)reaches 936.7±59.1 mmol/kg.Furthermore,the pH of the BA-BS remains stable at 6.9,meeting the rhizosphere pH requirements for plant cultivation.The CO_(2)absorption of the BA-BS liquid phase,referred to as improved biogas slurry(IBS),reaches its maximum at 230.4±3.5 mmol/L,which is 126.8%higher than that of the unimproved biogas slurry.The nitrogen content in the BA-BS solid phase,calling improved biomass ash(IBA),also reaches its maximum at 4.24±0.74 mg/g,thereby expanding the agricultural utilization of biomass ash.The most reasonable and effective way of utilizing CO_(2)-rich mixed biogas slurry and biomass ash involves use IBA as the base fertilizer for tomato cultivation,supplemented later with IBS to promote growth.This optimal application allows for substantial utilization of CO_(2),introduced into the tomato cultivation environment by IBA and IBS.The carbon fixation of a single tomato has improved by 108.2%.This study thus provides a feasible solution for high-value negative carbonization of biogas slurry and biomass ash.
基金This work was supported by the Natioanl Natrual Sciencce Foundation of China(21625103,21971125,21801183)China Postdoctoral Science Foundation(2019M660978,2020T130319),and the 111 Project(B12015).
文摘Cycloaddition of CO_(2) with aziridines is an important reaction to obtain high-value products.Porous MOFs can catalyze this reaction,but co-catalysts are still necessary to improve the catalytic performance.Such a reaction catalyzed by MOFs-based materials without co-catalyst has not been reported hitherto.Herein,a porous and stable three-dimensional(3D)framework{[Ni(DCTP)]·6.5DMF}_(n)(1)with a large Langmuir surface area of 3,789 m^(2)/g was synthesized,which displayed high I2 adsorption ability up to 731.0 mg/g and could release it reversibly.Additionally,it exhibited a high CO_(2) adsorption capacity of 104.0 cm^(3)/g at 273 K.The investigation results revealed 1 could effectively catalyze the cycloaddition of CO_(2) and aziridines in the absence of additional co-catalyst,and it could maintain the catalytic activity after five cycles.Furthermore,1 also exhibited high catalytic activity for the gram-scale experiment.Importantly,it is the first MOF material as a heterogeneous catalyst for the conversion of CO_(2) and aziridines without co-catalyst.
