Article
Chemistry, Analytical
Wenchang Yue, Xiaoqian Ma, Zhaosheng Yu, Hongyu Liu, Meirong Li, Xiaoluan Lu
Summary: In this study, catalytic pyrolysis of corn cob in a fixed-bed reaction system was used to achieve high-value conversion of biomass energy and produce hydrogen-rich gas. The effects of synthesis temperature and catalyst metal ratio on the pyrolysis gas composition, yield, and hydrogen conversion were investigated. The results showed that the Ni1Ca7-750 catalyst had excellent properties and achieved the highest H2 concentration, hydrogen yield, and hydrogen conversion.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Multidisciplinary Sciences
Bin Shao, Zhi-Qiang Wang, Xue-Qing Gong, Honglai Liu, Feng Qian, P. Hu, Jun Hu
Summary: The integrated CO2 capture and conversion (iCCC) technology is a promising cost-effective approach for Carbon Neutrality. The lack of molecular consensus about the synergistic effect between adsorption and in-situ catalytic reaction hampers its development. In this study, the synergies between CO2 capture and in-situ conversion are illustrated through high-temperature Calcium-looping and dry reforming of methane processes.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Wenchang Yue, Xiaoqian Ma, Zhaosheng Yu, Hongyu Liu, Weijie Li, Changxin Li
Summary: This study investigated the effects of different metal doping and Mo addition ratios on the performance of biomass catalytic pyrolysis for hydrogen production. The results showed that the Mo0.5Ni1Ca7 catalyst had the best catalytic activity and yielded the highest hydrogen production. The Mo0.5Ni1Ca7 catalyst also reduced CO2 concentration and enhanced adsorption performance. The increase in Mo and NiO/Ni (OH)2 ratio further improved the stability and activity of the catalyst.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Analytical
LingLing Yao, Can Lei, Shengxiong Huang, Qian He, Zehao Qian, Wei Luo, Xiangzhe Yan, Tao Wang, Mao Xia, Nan Zhou, Zhi Zhou
Summary: In this study, Ni-Fe/CaO-Al2O3 catalysts with different Ni/Fe ratios were synthesized using in-situ and ex-situ methods. The effect of products distribution in Chinese herb residue (CHR) catalytic pyrolysis by these methods was investigated. The results showed that in-situ NiFe-3 group had the highest content of aromatic compounds (59.68%) and the lowest content of aliphatic compounds (17.67%), benefiting the extraction of chemical raw materials from pyrolysis oil. CaO in the catalyst effectively reduced the acid content and corrosion of pyrolysis oil. Ex-situ catalytic experiments revealed that higher Ni and CaO content had synergistic catalytic action, promoting the water-gas shift reaction and the generation of H2. In-situ catalysis was mainly used for pyrolysis oil upgrading, while ex-situ catalysis promoted secondary pyrolysis of pyrolysis products and improved the quality of pyrolysis oil. This work provides references for the difference and high value utilization of biomass pyrolysis through different catalytic methods.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Chemistry, Multidisciplinary
Hongyu Liu, Yuting Tang, Xiaoqian Ma, Wenchang Yue
Summary: In this study, four different synthesis methods for Ni/CaO catalysts were examined, and it was found that the sol-gel method with propionic acid modification increased the hydrogen generation. Optimizing the synthesis methods and catalyst/biomass ratio resulted in high-quality hydrogen-rich gas.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Environmental Sciences
Soheil Valizadeh, Chang Hyun Ko, Jechan Lee, See Hoon Lee, Yeon Jeong Yu, Pau Loke Show, Gwang Hoon Rhee, Young-Kwon Park
Summary: This study demonstrates that pyrolysis of food waste using Ni-EG catalyst under CO2 atmosphere can lead to higher gas yield, lower condensable yield, and effective suppression of cyclic species in bio-oil. The simultaneous use of Ni-EG catalyst and CO2 contributes to altering the carbon distribution of pyrolytic products and provides a clean and high-quality source of energy.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Analytical
Hongyu Zhu, Lin Lang, Gang Fang, Dingying Na, Xiuli Yin, Xi Yu, Chuangzhi Wu, Anthony V. Bridgwater
Summary: Thermal conversion technology of Chinese herb residues (CHR) is a promising method for clean utilization due to its efficiency and short process. In this study, the effect of K2CO3 catalyst on the thermal decomposition behavior of CHR samples was investigated, revealing a significant promotion of catalytic pyrolysis reaction. The pyrolysis temperature of CHR is higher than traditional lignocellulosic biomass.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2021)
Article
Chemistry, Physical
Jianfen Li, Rongyi Gao, Longkai Zhu, Yiran Zhang, Zeshan Li, Bolin Li, Jiaxiang Wang, Ji He, Yun He, Zhenhua Qin, Mahmood Laghari, Dabin Guo
Summary: In this study, the Ni-La/Al2O3-CaO-C catalyst was successfully prepared and employed for hydrogen production through the co-pyrolysis of soybean straw with polyethylene. The experimental results demonstrate that the Ni-La/Al2O3-CaO-C catalyst exhibits superior catalytic activity and stability.
Article
Agricultural Engineering
Shengxiong Huang, Jie Qin, Qian He, Yujiao Wen, Sheng Huang, Bo Li, Jian Hu, Nan Zhou, Zhi Zhou
Summary: The study found that torrefaction treatment increases gas yield but inhibits oil formation. Different compounds were observed in gas and bio-oil under different torrefaction conditions. The presence of oxygen significantly reduces torrefaction temperature while maintaining severity and distribution of pyrolytic products.
BIORESOURCE TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
M. Gonzalez-Castano, J. C. Navarro de Miguel, A. Penkova, M. A. Centeno, J. A. Odriozola, H. Arellano-Garcia
Summary: This study proposes an innovative Ni catalyst supported over YMnO3 perovskite as a promising catalytic system for CO2 methanation reaction. The synergism between strongly interacting Ni particles with partially reduced YMnO3-x perovskites enables highly active and stable catalytic behaviors.
APPLIED MATERIALS TODAY
(2021)
Article
Chemistry, Multidisciplinary
Silvera Scaccia, Livia Della Seta, Daniele Mirabile Gattia, Giuseppina Vanga
Summary: A novel Ni/CaO-Ca12Al14O33 catalyst was prepared by Ni wet impregnation on a mixed calcium-aluminum-oxide (CAO) support, which exhibited good stability and low carbon deposition during dry reforming of methane. In contrast to the reference catalyst Ni/gamma-Al2O3, the novel catalyst showed higher basicity and better performance in the reaction.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Energy & Fuels
Junjie Weng, Zhanjun Cheng, Yi Zhang, Chao Jiang, Lin Long, Jian Wang, Jianfeng Pan
Summary: This study investigates the thermal and catalytic co-pyrolysis of biomass and plastic using catalysts. The results show that the catalyst enhances the decomposition of biomolecule and increases the production of specific compounds, providing insights into the mechanism of catalytic co-pyrolysis.
Article
Environmental Sciences
Shengxiong Huang, Jie Qin, Tao Chen, Cheng Yi, Siyan Zhang, Zhi Zhou, Nan Zhou
Summary: This study investigated the synergistic effects during co-pyrolysis of LDPE and CHR, finding that the extent of synergistic or inhibitory effects was connected with the severity of CHR torrefaction, and the activation energy depended on the blend ratio of LDPE and CHRs. Co-pyrolysis tended to generate more small molecule products, reduce oil yield, but improve oil quality.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Bo Li, Zehao Qian, Jie Qin, Qian He, Shengxiong Huang, Hang Dong, Nan Zhou, Mao Xia, Zhi Zhou
Summary: This study investigates the differences between in situ and ex situ catalytic fast pyrolysis methods for biomass treatment. It finds that both methods can improve the quality of bio-oil but decrease the yield. In situ CFP process prevents the transfer of heteroatoms to bio-oil while ex situ CFP process promotes the transfer. Additionally, ex situ CFP reaction significantly increases the content of aromatic hydrocarbons.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
M. Safdar, M. Gonzalez-Castano, A. Penkova, M. A. Centeno, J. A. Odriozola, H. Arellano-Garcia
Summary: This study investigates the impact of Ni-supported YMn1-xAlxO3 catalysts on the CO2 methanation reaction. The results show the importance of the support nature and the improvement in redox behavior achieved through Al-incorporation.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Analytical
Guanshuai Zhang, Shanjian Liu, Dongmei Bi, Zhisen He, Jia Liu, Yinjiao Liu
Summary: Hydrogen peroxide pretreatment was applied for fast pyrolysis of corn stalks, and it was found that the pretreatment effectively promoted lignin depolymerization and decreased the reaction activation energy. The pretreatment also increased the cellulose content and removed alkali and alkaline earth metals from the biomass. The pH of the hydrogen peroxide solution affected the removal of lignin and ash by the pretreatment, and the composition of bio-oil changed significantly, with a significant increase in the relative content of levoglucosan after pretreatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2024)