Article
Chemistry, Applied
J. Vera-Iturriaga, M. L. Hernandez-Pichardo, J. A. Montoya de la Fuente, P. Del Angel, D. Gomora-Herrera, E. Palacios-Gonzalez, L. Lartundo, L. A. Moreno-Ruiz
Summary: The study investigated the effect of TiO2 as an additive in the Pt/WO3-ZrO2 catalyst system on the catalytic activity of n-hexane hydroisomerization. It was found that the incorporation of TiO2 can promote the stabilization of active sites, leading to higher conversion rates and yields in the reaction.
Article
Chemistry, Multidisciplinary
Peipei Zhao, Weiyue Wang, Xufang Wang, Chufeng Liu, Jiqing Lu, Mengfei Luo, Jian Chen
Summary: The study demonstrates that MoO3 promoted Pt/ZrO2 catalysts exhibit higher catalytic activity and reduced activation energy in propane combustion.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Danrui Zhu, Mo Liu, Shilong Li, Yufeng Mao, Jianjun Chen, Qiulin Zhang, Ping Ning
Summary: A series of CuOx/TiO2-ZrO2 (Cu/TZ) catalysts were prepared and applied in catalytic elimination of chlorobenzene. Cu/TZ exhibited superior catalytic performance with 90% conversion at a relatively low temperature, lower activation energy and higher reaction rate compared to Cu/T and Cu/Z. The superior performance of Cu/TZ was attributed to its well-dispersed CuOx active species, abundant surface adsorbed oxygen, and plentiful surface acid density, particularly the Lewis acid sites.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jiu Wang, Heng Zhao, Bicheng Zhu, Stephen Larter, Shaowen Cao, Jiaguo Yu, Md Golam Kibria, Jinguang Hu
Summary: The research demonstrates an effective strategy for fast sunlight-driven glucose isomerization with over 60% fructose selectivity, achieved through a rationally designed crystalline carbon nitride. This provides a new photocatalytic process for biofuels and chemicals production.
Article
Chemistry, Physical
Sean Najmi, Jungseob So, Eli Stavitski, William P. McDermott, Yimeng Lyu, Sam P. Burt, Ive Hermans, David S. Sholl, Carsten Sievers
Summary: Reactions of acetone and hydroxyacetone over heteroatom doped BEA zeolites (Sn, Mo, and W) with and without H2O vapor were studied using infrared spectroscopy. It was found that H2O vapor is beneficial in reducing coke formation at high temperatures, and Sn-BEA plays a significant role in catalyzing the conversion of acetone and hydroxyacetone.
Article
Chemistry, Physical
Qi-An Huang, Asahi Haruta, Yuhya Kumamoto, Haruno Murayama, Eiji Yamamoto, Tetsuo Honma, Mitsutaka Okumura, Hiroki Nobutou, Makoto Tokunaga
Summary: The study demonstrates that highly dispersed supported platinum catalyst can act as a heterogeneous soft Lewis acid, showing high turnover numbers and reusability in the isomerization of allylic esters under solvent-free conditions. The residual chloride anion enhances the Lewis acidity of the Pt metal center, improving catalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
M. Ibrahim, A. A. Jalil, W. F. W. Zakaria, N. A. A. Fatah, M. Y. S. Hamid, S. M. Izan, H. D. Setiabudi
Summary: The research indicated that increasing zirconium loading can enhance the Lewis acid sites of the catalyst, while excessive loading can reduce the amount of protonic acid sites, thus decreasing the catalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Philip Netzsch, Regina Stroh, Florian Pielnhofer, Ingo Krossing, Henning A. Hoeppe
Summary: Borosulfates offer fascinating structures and properties beyond pure silicate analogy. Mg-3[H2O -> B(SO4)(3)](2) is the first borosulfate with a boron atom coordinated by three tetrahedra, exhibiting higher Lewis and Brønsted acidity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Lu Fang, Siyang Yan, Huifang Wu, Mingrui Wang, Teng Du, Tianlong Wang, Jiaxu Liu, Changgong Meng, Xinwen Guo, Limin Ren
Summary: A defect-guided etching-regrowth strategy is proposed to selectively anchor active centers on the external surface for forming highly exposed acid sites in zeolite catalyst synthesis. The results show the prominent advantages of the hierarchical structure with highly exposed and synergetic acid sites.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Yayati Naresh Palai, Abhijit Shrotri, Miyuki Asakawa, Atsushi Fukuoka
Summary: A highly efficient Lewis acid catalyst for the isomerization of glucose to fructose was synthesized by controlling the dispersion of Sn on SBA15. The catalyst exhibited high selectivity and fructose yield, while mechanisms involving condensation of Sn with silanol groups on SBA15 were proposed. Despite deactivation due to byproduct deposition in the third cycle, catalyst activity could be restored by calcination.
Article
Materials Science, Multidisciplinary
L. P. Teh, H. D. Setiabudi, S. M. Sidik, N. H. R. Annuar, A. A. Jalil
Summary: The study investigated the potential of Pt and MoO3 loading on HBEA zeolite in enhancing n-heptane isomerization, demonstrating significant improvement in catalytic activity with Pt/MoO3-HBEA catalyst. The results revealed strong metal support interactions and highlighted the importance of both Pt and MoO3 as active sites for enhanced n-heptane isomerization. This sheds light on the design of new MoO3 based catalysts for isomerization reaction.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Hongguang Zhang, Heng Zhao, Shixiong Zhai, Ruixuan Zhao, Jiu Wang, Xi Cheng, Hadi Shaker Shiran, Stephen Larter, Md Golam Kibria, Jinguang Hu
Summary: This study demonstrates the feasibility of biomass photorefinery for co-production of H-2 and value-added chemicals under mild conditions through the design and fabrication of a bifunctional polymeric red carbon nitride.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Ruite Lai, Qidong Hou, Guanjie Yu, Chao Xie, Hengli Qian, Tianliang Xia, Xinyu Bai, Yao Tang, Mian Laiq Ur Rehman, Meiting Ju
Summary: In this study, a Sn doped zirconium phosphate catalyst was developed for the efficient isomerization of dihydroxyacetone into lactic acid in water. The catalyst exhibited high activity and reusability, while preventing leaching of ions. The excellent catalytic performance was attributed to the accelerated conversion of pyruvaldehyde to lactic acid by the strong Lewis acid sites.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Masayoshi Miyazaki, Hiroshi Saito, Kiya Ogasawara, Masaaki Kitano, Hideo Hosono
Summary: The base strength of oxide catalysts is determined by the electron charge distribution between cations and anions. This study demonstrates the enhancement of catalytic basicity through selective doping of nitride ions at oxygen vacancy sites. The formation of oxynitride creates strong Lewis base sites that facilitate catalytic activation and improve reaction efficiency.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Tana Tana, Pengfei Han, Aidan J. Brock, Xin Mao, Sarina Sarina, Eric R. Waclawik, Aijun Du, Steven E. Bottle, Huai-Yong Zhu
Summary: 5-hydroxymethylfurfural (HMF) is a valuable platform chemical for sustainable fine-chemical and pharmaceutical industry based on biomass. The complex of fulvic acid with Al3+ ions exhibits solar absorption and photocatalytic activity for glucose conversion to HMF in one-pot reaction, offering prospects for new green photocatalytic systems. This mechanism creates the possibility of synthesizing a range of substances that have not previously been considered.
NATURE COMMUNICATIONS
(2023)
Article
Energy & Fuels
Nuni Widiarti, Hasliza Bahruji, Holilah Holilah, Yatim Lailun Ni'mah, Ratna Ediati, Eko Santoso, Aishah Abdul Jalil, Abdul Hamid, Didik Prasetyoko
Summary: Limestone was converted to high surface area CaO/MgO catalysts using the CHD method, and the addition of surfactant PEG improved the performance of the catalysts. Optimization studies resulted in the highest biodiesel yield, and impregnation with 5% NiO further enhanced the esterification functionality of the catalysts.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Chemistry, Physical
M. S. Azami, A. A. Jalil, F. F. A. Aziz, N. S. Hassan, C. R. Mamat, N. M. Izzudin
Summary: An interlayer structure hybrid wrinkled silica titania (WST) loaded on graphitic carbon nitride (g-C3N4) was successfully constructed using a facile microwave-assisted solid-state technique. The photocatalytic performance was evaluated, and the 10 wt% WST@CN exhibited the best performance due to its hidden morphology between the layers of g-C3N4, leading to enhanced charge separation efficiency. This study is significant for improving visible light-driven photocatalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
N. S. Hassan, A. A. Jalil, C. N. C. Hitam, M. H. Sawal, M. N. S. Rahim, I. Hussain, N. W. C. Jusoh, R. Saravanan, D. Prasetyoko
Summary: Fibrous silica tantalum (FSTa) and metal oxides (AgO, CuO, ZnO)/FSTa catalysts were prepared and characterized for the photocatalytic oxidative desulfurization (PODS) of dibenzothiophene (DBT). The addition of metal oxides decreased the efficiency of PODS, possibly due to mismatched redox potentials. Among the metal oxides loaded FSTa, Zn/FSTa exhibited higher desulfurization rate and could directly oxidize DBT into dibenzothiophene sulfone (DBTO2). The kinetics study showed that the photodegradation over Zn/FSTa followed the pseudo-first-order and adsorption was the rate-limiting step.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Pham Thi Thuy Phuong, Nguyen Nguyen Phuong, P. Senthil Kumar, Nguyen Phuc Hoang Duy, Quyet Van Le, Le Thi Bao Ngoc, A. A. Jalil, Saravanan Rajendran, Chin Kui Cheng, Thanh-Huong Nguyen, Minh Tuan Nguyen Dinh, Dai-Viet N. Vo
Summary: CO2 reforming of methanol for producing hydrogen was experimentally studied using a fixed-bed reactor with 10%Ni/SiO2 catalyst. The catalyst was fully reduced and had a surface area of 240.5 m(2)/g during H-2 activation. The methanol conversion significantly improved from 52% to 99% with increasing temperature from 450 to 550 degrees C due to the endothermic nature of CO2 reforming. The H-2/CO ratios ranged from 1.65 to 1.76 at different reaction temperatures, which are preferred for long-chain hydrocarbons generation in Fischer-Tropsch production. The catalytic activity remained stable within 8 hours on-stream due to the maintenance of Ni-0 metallic phase during CO2 reforming of methanol. The catalytic deterioration was not observed because of the concomitant CO2 gasification of surface carbonaceous species during reaction.
TOPICS IN CATALYSIS
(2023)
Article
Energy & Fuels
A. H. K. Owgi, A. A. Jalil, M. A. A. Aziz, W. Nabgan, N. S. Hassan, I. Hussain, M. Alhassan, M. A. A. Aziz, A. H. Hatta, M. Y. S. Hamid
Summary: Spherical mesoporous Ni/fibrous silica-alumina (Ni/FSA) catalysts with varied Ni loadings were synthesized and their catalytic performance was evaluated. The catalyst with 12.5 wt% Ni showed the highest efficiency and stability, and could inhibit coke deposition.
Article
Energy & Fuels
A. H. Hatta, A. A. Jalil, M. Y. S. Hamid, N. S. Hassan, I. Hussain, N. W. C. Jusoh
Summary: Aspherical nickel-loaded fibrous silica mesoporous ceria (Ni/FSCe) with a cockscomb-like structure has been synthesized and used for CO methanation. The Ni/FSCe showed significantly improved catalytic capability compared to conventional Ni-Ce/KCC-1. This can be attributed to the high amount of inter-nanoparticle oxygen vacancies, well-dispersed Ni, and better metal-support interactivity, which lead to better adsorption and inhibition of carbon deposition.
Article
Chemistry, Physical
N. A. Ali, M. Ismail, M. M. Nasef, A. A. Jalil
Summary: CoTiO3 synthesised via the solid-state method effectively improves the desorption behavior of NaAlH4, reducing the desorption temperature and increasing the desorption kinetics, potentially serving as a catalyst for hydrogen storage.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Yorinda Buyang, Suprapto Suprapto, Reva Edra Nugraha, Holilah Holilah, Hasliza Bahruji, Ridho Hantoro, Aishah Abdul Jalil, Titie Prapti Oetami, Didik Prasetyoko
Summary: Conversion of non-edible RTO into bio-oil by catalytic pyrolysis using dolomite as a catalyst, without prior calcination or treatment. Dolomite enhanced bio-oil yield and reduced char formation at higher pyrolysis temperatures. Dolomite also improved the composition and physical properties of bio-oil, including viscosity, calorific value, and density, and reduced the carboxylic acid content through esterification reaction.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Biotechnology & Applied Microbiology
Duyen Thi Cam Nguyen, A. A. Jalil, Nguyen Chi Huynh, Linh Quang Phan, Dai-Viet N. Vo, Thuan Van Tran
Summary: In this study, ZnFe2O4@AC derived from O. stricta biowaste was fabricated and used for dye removal. The optimized ZnFe2O4@AC showed excellent performance in terms of adsorption capacity and kinetics, making it a promising bioadsorbent.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Review
Chemistry, Analytical
N. F. Khusnun, A. Arshad, A. A. Jalil, L. Firmansyah, N. S. Hassan, W. Nabgan, A. A. Fauzi, M. B. Bahari, N. Ya'aini, A. Johari, R. Saravanan
Summary: Green hydrogen as a promising environmentally friendly electricity provider has become a hot topic worldwide, as it is considered to replace conventional fossil fuels. Photoelectrochemical (PEC) cells efficiently convert sunlight into green H2 fuel through PEC water splitting, with carbon-doped materials attracting great interest due to their excellent photocatalytic activity and wide applications. The efficiency of carbon-doped materials in H2 production relies on the separation and transport efficiency of charge carriers. This review summarizes the recent research on carbon-doped materials as photoanodes for PEC water splitting, including their performance, functionalization, heterojunction mechanism, and cell design.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
M. N. Arifin, R. Jusoh, H. Abdullah, N. Ainirazali, H. D. Setiabudi
Summary: The presence of phenolic compounds in water poses severe risks, and nitro- and alkyl-phenolic compounds have been categorized as precedence contaminants by the US EPA. Therefore, efficient treatment methods for wastewater containing these compounds are urgently needed.
ENVIRONMENTAL RESEARCH
(2023)
Article
Energy & Fuels
M. A. Aziz, A. A. Jalil, M. Y. S. Hamid, N. S. Hassan, N. F. Khusnun, M. B. Bahari, A. H. Hatta, M. A. H. Aziz, J. Matmin, S. H. Zein, Rajendran Saravanane
Summary: The Centre of Hydrogen Energy (CHE) has recently developed novel structures of fibrous mesoporous silica nano-particles (FMSN) and fibrous Mobil composition of matter-41 (FMCM-41), namely CHE-SM and CHE-S41. These structures were used as a support, with 5 wt% Ni as the active metal, for carbon dioxide (CO2) methanation. The results from low angle x-ray diffraction (XRD) and transmission electron microscopy (TEM) showed that Ni/CHE-S41 had a hexagonal structure, while Ni/CHE-SM had a lamellar structure. Ni particles were found to be deposited on the surface of CHE-SM due to its smaller support pore size (4.41 nm) compared to the average Ni particles diameter (5.61 nm), resulting in higher basicity and reducibility. On the other hand, Ni/CHE-S41 exhibited deposition of Ni particles in the pore due to the difference in support pore size (4.89 nm) compared to average Ni particles diameter (4.01 nm). As a result, Ni/CHE-SM achieved a higher CO2 conversion (88.6 %) than Ni/CHE-S41 (82.9%) at 500 degrees C, while both showed 100% selectivity towards methane. Furthermore, Ni/CHE-SM demonstrated excellent resistance to coke formation during a 50 h stability test at 500 degrees C, as evidenced by a lower weight loss of 0.469% in TGA analysis and a lower G:D band ratio of 0.43 in Raman spectroscopy compared to Ni/CHE-S41 (0.596% weight loss and 0.74 G:D band ratio). These properties of Ni/CHE-SM are advantageous in the field of methane production, as coke formation can affect the equilibrium of the CO2 methanation process.
Review
Chemistry, Multidisciplinary
B. A. Abdulkadir, A. A. Jalil, C. K. Cheng, H. D. Setiabudi
Summary: This article reviews porous silica-based scaffolds as an ideal material for improved hydrogen storage. The use of scaffolds significantly increases the storage capacities of metal hydrides, and the structural modifications of the silica-based scaffold into a hollow structure further improve the storage capacity and increase the affinity and confinement ability of the metal hydrides. The enhancement of storage capacity is deemed essential, and structural modifications, such as adopting a hollow-fibrous structure, are recommended.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Abdul Aziz, Berliana Gricelda Andini Putri, Didik Prasetyoko, Reva Edra Nugraha, Holilah Holilah, Hasliza Bahruji, Aishah Abdul Jalil, Suprapto Suprapto, Hartati Hartati, Nurul Asikin-Mijan
Summary: This study utilized saponin extract from Sapindus rarak as a natural template to synthesize mesoporous zeolite Y with improved surface area and mesoporosity. Impregnating different amounts of nickel on the zeolite further enhanced the deoxygenation reaction and increased the selectivity towards specific hydrocarbon compounds in the liquid product.
Article
Chemistry, Multidisciplinary
Eka Putra Ramdhani, Eko Santoso, Holilah Holilah, Reva Edra Nugraha, Hasliza Bahruji, Suprapto Suprapto, Aishah Abdul Jalil, Nurul Asikin-Mijan, Syafsir Akhlus, Didik Prasetyoko
Summary: Conversion of red mud into mesoporous Fe-aluminosilicate can produce selective catalysts for deoxygenation of waste cooking oil. The addition of citric acid during the conversion process changes the structure of the catalyst. Untreated red mud has a well-defined hexagonal mesoporosity, while treated red mud has lower regularity mesopores.
Article
Chemistry, Physical
Yifan Sun, Ye Lv, Wei Li, Jinli Zhang, Yan Fu
Summary: In this study, PtRu electrocatalysts were fabricated on carbon paper via cyclic electrodeposition for the electrocatalytic hydrogenation (ECH) of phenol. The Pt3Ru3 catalyst exhibited excellent activity and stability for the conversion of phenol to cyclohexanol at ambient temperature and various current densities. The in situ Raman spectroscopy and kinetic study revealed the hydrogenation mechanism of phenol over Pt3Ru3 in acidic electrolyte, providing an effective electrochemical strategy for the facile construction of durable electrode materials and efficient phenol hydrogenation.
JOURNAL OF CATALYSIS
(2024)
Article
Chemistry, Physical
Amir Shahzad, Khezina Rafiq, Muhammad Zeeshan Abid, Naseem Ahmad Khan, Syed Shoaib Ahmad Shah, Raed H. Althomali, Abdul Rauf, Ejaz Hussain
Summary: Photocatalytic hydrogen production through water splitting is an effective method for meeting future energy demands. In this study, researchers synthesized a 1 % Ag2S/Cu2S co-doped CdZnS catalyst and found that it can produce hydrogen at a higher rate. The co-doping of Ag2S and Cu2S in the CdZnS catalyst showed a synergistic effect, with Ag2S promoting oxidation reactions and Cu2S promoting reduction reactions.
JOURNAL OF CATALYSIS
(2024)
