Article
Energy & Fuels
Kun-Lang Lu, Fan Yin, Xian-Yong Wei, Jia-Hao Li, Zhuang Li, Zi-Chun Fan, Zhi-Min Zong
Summary: In this study, Ni15Co5/ZrO2, Ni15Fe5/ZrO2, and Ni-15/ZrO (2) catalysts were applied for p-cresol deoxygenation. It was found that the introduction of Co or Fe altered the electronic structure of the catalyst surface, leading to different deoxygenation activity and yield.
Article
Chemistry, Physical
Beilei Cui, Hua Wang, Jinyu Han, Qingfeng Ge, Xinli Zhu
Summary: The activity and selectivity of Ni for the hydrodeoxygenation of m-cresol can be modified through strong metal-support interaction (SMSI) differences on anatase and rutile TiO2 crystal phases. The Ni/r-TiO2 catalyst reduced at 650 degrees C exhibited moderate SMSI and was selective to toluene while completely inhibiting CH4 formation. The turnover frequency for DDO on the Ni/r-TiO2 catalyst reduced at 650 degrees C was significantly higher compared to Ni on rutile and anatase reduced at 350 degrees C.
JOURNAL OF CATALYSIS
(2022)
Article
Energy & Fuels
Cheol Woo Park, Jong Wha Kim, Han Ung Kim, Young-Kwon Park, Su Shiung Lam, Jeong-Myeong Ha, Jungho Jae
Summary: The development of non-noble metal-based catalysts for the hydrodeoxygenation (HDO) upgrading of biomass pyrolysis oils is crucial for cost-effective biofuel production. The rhenium-promoted nickel catalysts (Ni-Re) showed significantly higher HDO activity compared to other monometallic and bimetallic catalysts. The addition of rhenium to nickel altered both geometric and electronic structures, leading to enhanced catalytic activity for deoxygenation of biomass-derived phenols.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Chemical
Omar U. Valdes-Martinez, Jorge Noe Diaz de Leon, Carlos E. Santolalla, Alfonso Talavera-Lopez, Hugo Avila-Paredes, Jose Antonio de los Reyes
Summary: The study investigates the impact of different supports on Ru catalysts in the HDO reaction, revealing that supports have a significant influence on the activity of different molecules, which occurs through a cooperative action between the metallic phase and the support. In the reactions of ethanol and cyclohexanol, acid properties become more relevant at higher temperatures, while the metallic function decreases as the temperature rises.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Swathi Mukundan, Ramesh Kumar Chowdari, Jorge Beltramini
Summary: This study successfully converted softwood lignin derived from black liquor into industrially important aromatic compounds through efficient catalytic hydrodeoxygenation. The activated carbon supported NiMoS2 catalyst exhibited good stability and selectivity, while the addition of ZrO2 was able to regulate the acidity of the catalyst.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Chemistry, Physical
Beilei Cui, Hua Wang, Qingfeng Ge, Xinli Zhu
Summary: The size of nickel particles has a significant impact on the strong metal-support interactions and hydrodeoxygenation of m-cresol. The TiOx overlayer alters the properties of nickel, enhancing deoxygenation activity. Smaller nickel particles show higher turnover frequency for hydrodeoxygenation.
Review
Chemistry, Physical
Zhuohua Sun, Zhe-Hui Zhang, Tong-Qi Yuan, Xiaohong Ren, Zeming Rong
Summary: This review explores the history, synthetic strategies, and controls of Raney Ni catalysts, with a focus on their applications in biomass conversion. By comparing with supported Ni catalysts, the unique advantages of Raney Ni in biomass conversion are revealed.
Article
Chemistry, Multidisciplinary
Penghui Yan, Eric Kennedy, Michael Stockenhuber
Summary: The study demonstrates that Ni/BEA and Ni/MOR catalysts show better performance in the hydrogenation of toluene, while Ni/BEA is more effective in the hydrodeoxygenation of anisole.
Article
Chemistry, Physical
Tianhao Hu, Sabrina M. Gericke, Xiao Tong, Dmytro Nykypanchuk, Tove Kristensen, Christian Hulteberg, Dario Stacchiola, Sara Blomberg, Ashley R. Head
Summary: The conversion of biomass to transportation fuels and value-added chemicals is a promising method to reduce the reliance on fossil fuels, and Mo-based catalysts have been shown to be highly active in this process. This study investigates the adsorption behavior of an alumina-supported mixed nickel molybdenum oxide catalyst and finds that molybdenum oxide controls the adsorption and reactivity of the surface species with a cooperative effect by nickel.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Jing Cao, An Li, Yicen Zhang, Linchao Mu, Xi Huang, Yankun Li, Tao Yang, Cen Zhang, Congshan Zhou
Summary: In this study, highly dispersed nano-MoS2 with abundant defects and curved slabs were synthesized using a hydrothermal method, allowing for the anchoring of Co atoms and the formation of efficient active sites for the HDO process. The Co-doped catalyst with an optimal Co/(Co + Mo) molar ratio of 0.3 showed excellent performance in terms of conversion rate and selectivity. Additionally, the optimized catalyst exhibited good stability after a 72-hour reaction, attributed to the formation of abundant Co-Mo-S active sites optimizing the electrical structure of nano-MoS2.
MOLECULAR CATALYSIS
(2021)
Article
Chemistry, Physical
Ben Liu, Yoshinao Nakagawa, Congcong Li, Mizuho Yabushita, Keiichi Tomishige
Summary: In this study, a regioselective catalyst was developed for the hydrogenolysis of 1,2-butanediol (1,2-BuD) to produce 2-butanol (2-BuOH) from biomass. The addition of iron to the catalyst improved both the activity and selectivity, and the reusability of the catalyst was enhanced through optimization of the preparation method. The catalyst showed high selectivity not only in the hydrogenolysis of 1,2-BuD, but also in the hydrogenolysis of other related alcohols.
Review
Chemistry, Physical
Na Ji, Jianyu Yin, Yue Rong, Hanyang Li, Zhihao Yu, Yaxuan Lei, Shurong Wang, Xinyong Diao
Summary: This review summarizes the recent advances in Nb2O5-supported metal catalysts for lignin hydrodeoxygenation, particularly focusing on the unique role of Nb2O5. It highlights the contribution of Nb2O5 in enhancing the cleavage of C-O bonds, improving suitability and reusability in aqueous phase, and provides insights into the modification strategies and conversion of lignin to aromatics over Nb2O5-supported metal catalysts. The review also discusses the remaining challenges and future development prospects for Nb2O5-supported metal catalysts in lignin valorization and other environmental catalytic processes.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Camila P. Ferraz, Anouchka Kimene, Karen Silva Vargas, Svetlana Heyte, Claire Durlin, Olivier Simon, Franck Dumeignil, Sebastien Paul, Robert Wojcieszak
Summary: The study shows that Ni-Cu alloy catalysts exhibit high catalytic performance in decarboxylation reactions, avoiding catalyst deactivation and enhancing product yields. By investigating the structure and properties of the catalyst in depth, optimization of reaction conditions can be achieved to achieve higher yields.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Jimei Zhang, Feng Duan, Yongbing Xie, Pengge Ning, He Zhao, Yanchun Shi
Summary: Encapsulation of Ni nanoparticles within silicalite-1 matrix with tailored crystal sizes resulted in improved conversion of phenolic compounds to arenes via the hydrogenolysis route. Smaller Ni@silicalite-1 crystals exhibited more pronounced active centers and better stability, enhancing selectivity control for the upgrading process. The encapsulation method also allowed for modification of adsorption mode of reactants, contributing to improved aromatic selectivity steric effects and stability of the Ni nanoparticles.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Lin Li, Xiaowa Nie, Yonggang Chen, Michael J. Janik, Chunshan Song, Xinwen Guo
Summary: Density functional theory calculations revealed the significant impact of bimetallic Pt-Fe surface structures on catalytic activity and selectivity, as well as key parameters dictating C-Ar-O bond cleavage across different phenolic reactants. Interaction of phenolic hydroxyl group with surface metal atoms modified the C-Ar-O bond length and charges transferred, influencing C-Ar-O bond cleavage properties. Introduction of Pt in different forms led to varied structural and electronic effects on adsorption and HDO activity.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Editorial Material
Engineering, Environmental
Krishna N. Ganesh, Deqing Zhang, Scott J. Miller, Kai Rossen, Paul J. Chirik, Marisa C. Kozlowski, Julie B. Zimmerman, Bryan W. Brooks, Phillip E. Savage, David T. Allen, Adelina M. Voutchkova-Kostal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Xin Ding, Seshasayee Mahadevan Subramanya, Yuqi Wang, Phillip E. Savage
Summary: The study found that adding K3PO4 and KOH had a significant positive effect on the hydrothermal liquefaction of pectin and chitin, increasing biocrude yields, while acidic conditions decreased yields. Additionally, additives altered the chemical composition of the biocrude, resulting in a higher fraction of low-boiling compounds in the chitin biocrude.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Correction
Engineering, Chemical
Phillip E. Savage, Sidi A. Benchirif, Brandon J. DeKosky, Ayman M. Karim
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Seshasayee Mahadevan Subramanya, Phillip E. Savage
Summary: Through experiments and predictive modeling, we discovered the diverse interactions and effects of biomass components during hydrothermal liquefaction, providing important insights for the processing of mixed biomass materials.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Mahadevan Subramanya Seshasayee, Rachel Stofanak, Phillip E. Savage
Summary: The study found synergistic interactions between different biomass components and plastics during hydrothermal liquefaction, increasing oil yields. A component-additivity model was developed to predict oil yields in HTL experiments with mixtures containing plastics.
Article
Agricultural Engineering
Xin Ding, Seshasayee Mahadevan Subramanya, Kayley E. Waltz, Yuqi Wang, Phillip E. Savage
Summary: The hydrothermal liquefaction (HTL) of starch, cellulose, pectin, and chitin was investigated using various catalysts. Co-Mo/γ-Al2O3 showed the highest biocrude yields and had little effect on the elemental composition of the biocrudes. A component additivity model accurately predicted the biocrude yields.
BIORESOURCE TECHNOLOGY
(2022)
Correction
Energy & Fuels
Xin Ding, Seshasayee Mahadevan Subramanya, Tao Fang, Yang Guo, Phillip E. Savage
Article
Engineering, Chemical
Bita Motavaf, Sofia H. Capece, Tomer Eldor, Phillip E. Savage
Summary: The study involved carbonizing and liquefying simulated food waste in two stages to produce bio-oil and recover nitrogen. The pyrolysis process yielded the most biochar from the biomass feedstock, while hydrothermal treatment was more effective for nitrogen recovery. The two-step approach allowed for higher energy recovery and nitrogen recovery compared to single-step hydrothermal liquefaction.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Editorial Material
Engineering, Chemical
Phillip E. Savage
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Editorial Material
Engineering, Chemical
Phillip E. Savage
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Editorial Material
Engineering, Chemical
Phillip E. Savage
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Seshasayee Mahadevan Subramanya, Nicholas Rios, Abbey Kollar, Rachel Stofanak, Katherine Maloney, Kayley Waltz, Lucas Powers, Chinmayee Rane, Phillip E. Savage
Summary: We utilized 352 published data points to develop and compare multivariate linear regression, regression tree, and random forest models for predicting the chemical composition of light oil from hydrothermal liquefaction of biomass. The random forest model showed the best prediction ability, followed by the regression tree and multivariate linear regression models, as indicated by the mean absolute error from ten-fold cross-validation. The random forest method also proved to be more scalable for extrapolation beyond the dataset range compared to multivariate linear regression. Furthermore, the study revealed previously unknown ternary interactions identified by the multivariate linear regression model, such as the involvement of lipid, lignin, and protein in increasing the abundance of N-containing compounds in the light oil. However, experimentation with lipid, lignin, and protein model compounds demonstrated the formation of undesirable long-chain amides in the oil, highlighting the importance of understanding the HTL process chemistry.
Article
Chemistry, Multidisciplinary
Patricia Pereira, Phillip E. Savage, Christian W. Pester
Summary: Post-consumer PET was hydrolyzed in pure water to produce TPA over a wide range of temperatures and pressures. The highest TPA yields were obtained by catalyzing the hydrolysis of molten PET in saturated liquid water. Rapid heating and isothermal hydrolysis also resulted in high TPA yields within a shorter time.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Editorial Material
Engineering, Chemical
Phillip E. Savage
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Correction
Electrochemistry
Phillip E. Savage
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2021)