Article
Chemistry, Physical
Yi-Xing Luo, Wendan Nie, Yiyue Ding, Qilu Yao, Gang Feng, Zhang-Hui Lu
Summary: Hydrogen is promising for future sustainable energy systems due to its cleanliness and renewability, while formic acid is considered an efficient hydrogen supplier because of its high hydrogen content and ease of storage and transport. Researchers have successfully developed Pd-ZrO2/SBA-15-NH2 catalyst for the dehydrogenation of formic acid, achieving 100% hydrogen selectivity at ambient conditions.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Qinglong Liu, Qiuna Zhao, Mingsheng Luo, Zhi Yang, Fengli Wang, Hong Li
Summary: Catalytic oxidation of toluene-bearing VOCs can be effectively achieved using Co-grafted dendritic mesoporous silica nanospheres. The catalysts exhibit superior micro-structure, high dispersion of CoOx species, and proper metal-support interaction. The presence of moisture negatively affects the catalytic activity but this effect is reversible. Introducing Pd into the catalysts significantly enhances the catalytic performance by influencing the oxygen activation and toluene adsorption synergistic effect.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Physical
Xun Wang, Linke Wu, Zhiwei Wang, Ying Feng, Yuxi Liu, Hongxing Dai, Zhihua Wang, Jiguang Deng
Summary: In this study, a new material was prepared to improve the photocatalytic efficiency and reduce energy consumption in the oxidation of volatile organic compounds (VOCs). The material exhibited a rich pore structure and a large specific surface area, facilitating the adsorption of pollutants. Among the catalysts tested, 0.26 Pd/3.2 N-TiO2 showed the best performance. The results demonstrate that doping and loading can enhance the light absorption capacity and reaction activity of the material, leading to the generation of reactive oxygen species and the catalytic removal of pollutants.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Chemistry, Multidisciplinary
Sungmin Han, C. Buddie Mullins
Summary: The study of Pd-Au model catalysts under UHV conditions reveals the influence of Pd ensemble size on H-2 desorption behavior, allowing H-2 to be used as a probe molecule for quantifying surface composition. Additionally, the Pd-Au interface is identified as the main reaction site for generating H-2, providing insights for potential liquid storage mediums for hydrogen.
ACCOUNTS OF CHEMICAL RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Ning Zhang, Yiou Shan, Jiaxin Song, Xiaoqiang Fan, Lian Kong, Xia Xiao, Zean Xie, Zhen Zhao
Summary: The Pt/Sn ratio influences the interaction between Pt and Sn, with the catalyst having a ratio of 1:2 showing the highest interaction. The Pt1Sn2/DMSN catalyst exhibited the best catalytic performance due to the small nanoparticle size of PtSn and the favorable chemical state and dispersion degree of Pt and Sn species.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Environmental Sciences
Suna Balci, Fatma Tomul
Summary: The catalytic performances of Silica Pillared Clay (SPC) supports synthesized with different amounts of silica were evaluated in Catalytic Wet Peroxide Oxidation (CWPO) of phenol. The type of clay mineral and the loading of iron or titanium significantly affected the catalytic performance. Fe-loaded SPCs showed better CWPO performance than Ti-loaded ones. The amount of catalyst and the temperature increase promoted the conversion of phenol. The catalysts were more effective under lower pH conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Celia Martin, Asuncion Quintanilla, Gonzalo Vega, Jose A. Casas
Summary: A kinetic model has been developed to describe the hydrogen production and deactivation mechanism during formic acid decomposition over a commercial 10 wt% Pd/AC catalyst. The study found that the reaction follows a first order kinetic for formic acid, and the activity shows exponential decay with the initial formic acid concentration and reaction temperature.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Mohammad Varbar, Seyed Mehdi Alavi, Mehran Rezaei, Ehsan Akbari
Summary: The textural features and catalytic efficiency of Mn-promoted Ni/MgAl2O4 catalysts were evaluated in the catalytic combustion of lean methane. The addition of manganese oxide improved the structural features and light-off temperatures, while the decrease in calcination temperature further increased the catalyst performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Applied
Paulina Szczyglewska, Agnieszka Feliczak-Guzik, Izabela Nowak
Summary: The study aimed to comprehensively analyze the catalytic performance of palladium and platinum catalysts on SBA-16 in hydrodeoxygenation of chemical compounds generated in biomass processing. It found significant differences in catalytic performance between palladium and platinum modified materials, with palladium-modified catalyst allowing for high conversion rates and platinum-modified catalyst showing higher selectivity to compounds without oxygen atoms. The direct impact of process conditions (temperature, pressure) on the HDO process was established and characterized.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Environmental
Poliane Chagas, Cinthia C. Oliveira, Alexandre A. Leita, Larissa L. Lima, Marcio F. Portilho, Luiz C. A. Olivera
Summary: This study describes the conversion of waste glycerol into valuable chemicals and evaluates the reaction conditions and catalyst selection. The addition of Al-modified catalysts increases the efficiency and selectivity of the reaction, achieving a glycerol conversion rate of over 80%, which shows potential for industrial applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Applied
Byeongju Song, Jeongmyeong Kim, Iljun Chung, Yongju Yun
Summary: The catalytic properties of Pt catalysts supported on mesoporous silica were studied in the enantio-selective hydrogenation of ethyl pyruvate. The results showed that the pore structure and size of the m-SiO2 supports significantly influenced both the activity and enantioselectivity. The use of specific modifiers and H-2 pressure further improved the performance of the catalysts.
Article
Engineering, Environmental
Boge Zhang, Yongjie Shen, Biyuan Liu, Jian Ji, Wenjing Dai, Pingli Huang, Dengsong Zhang, Guangqin Li, Ruijie Xie, Haibao Huang
Summary: Hydroxylation of the catalytic surface provides a new strategy for boosting the degradation of refractory volatile organic compounds (VOCs) at room temperature. This study demonstrates the successful ozone catalytic oxidation (OZCO) of toluene using a hydroxyl-mediated MnOx/Al2O3 catalyst. The catalyst exhibits excellent toluene degradation performance, with complete removal, high mineralization rate, and catalytic stability.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Applied
Hojeong Lee, Chinh Nguyen-Huy, Eun Jeong Jang, Jihyeon Lee, Euiseob Yang, Man Sig Lee, Ja Hun Kwak, Kwangjin An
Summary: The study shows that different types of mesoporous oxide supports have a significant impact on Pd dispersion and the redox behavior of Pd, thus influencing the product selectivity in catalytic furfural hydrogenation. Among the catalysts tested, Pd/Co3O4 exhibits the highest furfural conversion and selectivity towards 2-methylfuran.
Article
Chemistry, Multidisciplinary
Gauravjyoti D. Kalita, Podma P. Sarmah, Golap Kalita, Pankaj Das
Summary: A facile ligand-assisted approach was used to synthesize bimetallic Au-Pd nanoparticles with a tunable core@shell structure. The Au-Pd materials exhibited superior performance in two important reactions, with the Pd-core-Au-shell structure showing higher activity compared to the Au-core-Pd-shell structure.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Physical
Qianqian Xie, Chao Lei, Wenqian Chen, Binbin Huang
Summary: The composite material Pd/Fh, consisting of Pd nanoparticles supported onto mesoporous ferrihydrite, demonstrates excellent catalytic dehalogenation performance with rapid and complete removal of chlorophenol. The unique functions of Fh, including providing interaction sites with metals, facilitating adsorption of chlorophenol, and acting as an electron mediator, contribute to the synergistic effect between Pd catalyst and the support, enhancing dechlorination activity. This work presents a promising catalyst for efficient dehalogenation of chlorinated environmental pollutants and provides insights into the relationship between catalyst structure and dehalogenation activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Ju-Hyoung Park, Young-Joo Lee, Min-Ho Jin, Se-Joon Park, Dong-Wook Lee, Jong-Soo Bae, Joeng-Geun Kim, Kwang Ho Song, Young-Chan Choi
Article
Energy & Fuels
Hueon Namkung, Young-Joo Lee, Ju-Hyoung Park, Gyu-Seob Song, Jong Won Choi, Young-Chan Choi, Se-Joon Park, Joeng-Geun Kim
Article
Chemistry, Physical
Min-Ho Jin, Ju-Hyoung Park, Duckkyu Oh, Sung-Wook Lee, Jong-Soo Park, Kwan-Young Lee, Dong-Wook Lee
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Multidisciplinary
Dong-Wook Lee, Min-Ho Jin, Ju-Hyoung Park, Young-Joo Lee, Young-Chan Choi
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2018)
Article
Thermodynamics
Young-Joo Lee, Hueon Namkung, Ju-Hyoung Park, Gyu-Seob Song, Se-Joon Park, Joeng-Geun Kim, Jong-Won Choi, Chung-Hwan Jeon, Young-Chan Choi
APPLIED THERMAL ENGINEERING
(2018)
Article
Environmental Sciences
Young-Joo Lee, Ju-Hyoung Park, Gyu-Seob Song, Hueon Namkung, Se-Joon Park, Joeng-Geun Kim, Young-Chan Choi, Chung-Hwan Jeon, Jong Won Choi
ATMOSPHERIC ENVIRONMENT
(2018)
Article
Chemistry, Multidisciplinary
Young-Joo Lee, Jong-Won Choi, Ju-Hyoung Park, Hueon Namkung, Gyu-Seob Song, Se-Joon Park, Dong-Wook Lee, Joeng-Geun Kim, Chung-Hwan Jeon, Young-Chan Choi
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2018)
Article
Chemistry, Multidisciplinary
Dong-Wook Lee, Min-Ho Jin, Ju-Hyoung Park, Young-Joo Lee, Young-Chan Choi, Ji Chan Park, Dong Hyun Chun
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2018)
Article
Chemistry, Physical
Min-Ho Jin, Ju-Hyoung Park, Duckkyu Oh, Jong-Soo Park, Kwan-Young Lee, Dong-Wook Lee
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Chemistry, Multidisciplinary
Ju-Hyoung Park, Dong-Wook Lee, Young-Joo Lee, Gyu-Seob Song, Min-Ho Jin, Se-Joon Park, Hueon Namkung, Jong-Soo Bae, Joeng-Geun Kim, Kwang Ho Song, Jong Won Choi, Young-Chan Choi
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Energy & Fuels
Ju-Hyoung Park, Min-Ho Jin, Young-Joo Lee, Gyu-Seob Song, Jong Won Choi, Dong-Wook Lee, Young-Chan Choi, Se-Joon Park, Kwang Ho Song, Joeng-Geun Kim
Article
Thermodynamics
Hueon Namkung, Young-Joo Lee, Ju-Hyoung Park, Gyu-Seob Song, Jong Won Choi, Joeng-Geun Kim, Se-Joon Park, Joo Chang Park, Hyung-Taek Kim, Young-Chan Choi
Article
Engineering, Environmental
Ju-Hyoung Park, Min-Ho Jin, Dong-Wook Lee, Young-Joo Lee, Gyu-Seob Song, Se-Joon Park, Hueon Namkung, Kwang Ho Song, Young-Chan Choi
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Energy & Fuels
Hueon Namkung, Ju-Hyoung Park, Young-Joo Lee, Gyu-Seob Song, Jong Won Choi, Se-Joon Park, Sunghoon Kim, Jianzhong Liu, Young-Chan Choi
Summary: The study found that torrefaction pretreatment increases ash deposition and PM emissions during biomass combustion, while demineralization pretreatment significantly reduces ash deposition and PM emissions. Demineralization pretreatment is a good method for producing cleaner biomass fuel.
Article
Engineering, Environmental
Ju-Hyoung Park, Dong-Wook Lee, Min-Ho Jin, Young-Joo Lee, Gyu-Seob Song, Se-Joon Park, Hyun Jin Jung, Kyeong Keun Oh, Young-Chan Choi
Summary: A low-temperature hydrogen production process from lignocellulosic biomass passing through formic acid has been developed with improved sustainability and formic acid yield. The process includes biomass oxidation/hydrolysis with citric acid, mechanocatalytic depolymerization of biomass for better formic acid yield, and dehydrogenation of formic acid over Pd catalysts for clean hydrogen production.
CHEMICAL ENGINEERING JOURNAL
(2021)