Article
Chemistry, Physical
Son Dong, Houqian Li, Iris K. Bloede, Abdullah J. Al Abdulghani, Edgard A. Lebron-Rodriguez, George W. Huber, Ive Hermans
Summary: The catalytic conversion of model compounds for plastic pyrolysis oil (1-octene, octadiene, octane, and toluene) over ZSM-5 in a fixed-bed reactor was investigated mechanistically. The conversion of 1-octene resulted in the production of benzene, toluene, xylene, coke, and hydrogen through a series of cracking, oligomerization, cyclization, and hydrogen transfer reactions. Octadiene mainly contributed to reactor fouling through thermal coking, while octane and toluene were converted through cracking reactions and disproportionation, dealkylation, and coking reactions, respectively. The use of mesoporous ZSM-5 maintained product selectivity for 70 hours in time-on-stream experiments.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Energy & Fuels
Emad N. Al-Shafei, Mohammed Z. Albahar, Mohammad F. Aljishi, Ali N. Aljishi, Galal A. Nasser, Mohammed A. Sanhoob, Ali S. Alnasir, Ahmed AlAsseel
Summary: This study investigates the steam catalytic cracking of dodecane, and finds that the structure of zeolite plays an important role in the yield and selectivity of light olefins. The addition of steam can also modify the structure of zeolite.
Article
Chemistry, Multidisciplinary
Emad N. Al-Shafei, Mohammed Z. Albahar, Mohammad F. Aljishi, Aaron Akah, Ali N. Aljishi, Ahmed Alasseel
Summary: The study focuses on reforming heavy naphtha to increase gasoline octane number. A modified ZSM-5 zeolite catalyst with steam treatment was developed to improve the conversion and selectivity of the reaction. The addition of steam reduced coke formation and resulted in a gasoline reformate with high research octane number (RON). The modified catalyst showed high conversion and favored the production of olefins, paraffin, and iso-paraffins, along with aromatics and naphthenes.
Article
Chemistry, Applied
Hagos Birhane Asfha, Ashenafi Hailu Berta, Nayoung Kang, Danim Yun, Jaedeuk Park, Yong-Ki Park, Kiwoong Kim
Summary: In this study, a reaction mechanism of light straight run naphtha cracking over micro-spherical catalyst containing HZSM-5 was systematically investigated. The results showed that light paraffins and olefins were the primary products, and oligomerization and β-scission cracking dominated the secondary reactions. Experiments on single hydrocarbon feeds indicated that BTX formation proceeded via the formation of cycloalkanes and cyclo-olefinic intermediates. Temperature and space time influenced the product selectivity, with propylene selectivity increasing at lower temperatures and ethylene selectivity increasing at higher temperatures.
Article
Energy & Fuels
Qitong Cheng, Benxian Shen, Jichang Liu, Xinglong Qin, Lei Ye, Biao Xing
Summary: The study focused on the naphtha-methanol coupling conversion catalyzed by HZSM-5, with a structured lumping (SOL) kinetic model developed to predict product distributions. Significant improvements in naphtha conversion rate and light olefin yield were achieved using this approach.
Article
Chemistry, Applied
Fengqiu Chen, Jing Hao, Yueyang Yu, Dang-guo Cheng, Xiaoli Zhan
Summary: Hierarchical ZSM-5 zeolites with similar porous structures but different external acid strength were prepared through chemical vapor deposition (CVD) method. The results show that the external environment and micropores have different catalytic roles, and the weakening of acid strength is beneficial for suppressing specific reactions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Environmental
Leilei Dai, Hailong Zhao, Nan Zhou, Kirk Cobb, Paul Chen, Yanling Cheng, Hanwu Lei, Rongge Zou, Yunpu Wang, Roger Ruan
Summary: Catalytic cracking of plastics into naphtha as a substitute for new plastic production has the potential to contribute to the plastic circular economy. By utilizing hierarchical ZSM-5 catalysts, a significant improvement (4.3 x to 12.3 x) in catalyst lifetime has been achieved compared to conventional analogues. Increasing the Bronsted acid concentration enhances catalyst lifetime and boosts cumulative aromatic selectivity, resulting in economic benefits and reduced environmental impact.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Chemistry, Applied
Kang Chen, Jiyu Zhao, Anhui Li, Guosheng Li, Qiang Zhang, Tian Xia, Hongjuan Zhao, Xiaochun Zhu, Honghai Liu, Xionghou Gao, Chunming Xu, Baojian Shen
Summary: This study confirmed the possibility of realumination of dealuminated HZSM-5 zeolites through acid treatment. The reinsertion of extra-framework aluminia into the framework was observed during the realumination process. The distribution of framework Al was found to be closely related to the realumination capacity. Realuminated zeolites exhibited higher conversion of n-octane and higher selectivity of propylene in catalytic cracking reaction.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Environmental Sciences
Leilei Dai, Nan Zhou, Hui Li, Yunpu Wang, Yuhuan Liu, Kirk Cobb, Yanling Cheng, Hanwu Lei, Paul Chen, Roger Ruan
Summary: By utilizing relay catalysis with Al2O3 and ZSM-5 zeolite, the catalytic fast pyrolysis of LDPE can efficiently produce high value naphtha. Under optimized conditions, the selectivity of monoaromatics and C-5-C-12 alkanes/olefins can reach up to 100% in the product.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Shangfeng Li, Hao Yan, Yibin Liu, Xiaobo Chen, Xin Zhou, Xiang Feng, Chaohe Yang
Summary: Metal doped ZSM-5 catalysts have been extensively studied for their unique catalytic activity in C-H bond activation. In this work, we used density functional theory calculations and microkinetic analysis to explore the catalytic activity of 12 transition metal single-atom-doped ZSM-5 zeolite catalysts in the catalytic cracking of naphtha. Our results show a strong electronic interaction between the metal atom and ZSM-5 skeleton, leading to a stable structure that enhances hydrocarbon adsorption and promotes C-H bond activation and carbenium ion cracking. Carbon and hydrogen binding energy were identified as descriptors for catalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Maryam Haghighi, Soodabeh Bakhshi, Somayeh Gooneh-Farahani
Summary: Different catalysts based on ZSM-5 and ZSM-11 zeolites were synthesized using tetra-n-butyl ammonium bromide and 1,2-phenylenediamine as organic solid directing agents. The results showed that 1,2-phenylenediamine efficiently promoted the catalyst performance. Characterization of the synthesized catalysts was done using X-ray diffraction, SEM, and EDX, and their catalytic activity in tetradecane cracking was studied, with TiO2, CeO2, and butanol showing improvement in conversion rates and product yields. The highest conversion rate of about 53.4% was achieved by CeO2-ZSM-5 at a tetradecane to butanol mass ratio of 10/3.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Chemistry, Physical
Kang Chen, Xueqiu Wu, Jiyu Zhao, Hongjuan Zhao, Anhui Li, Qiang Zhang, Tian Xia, Peng Liu, Bo Meng, Weiyu Song, Xiaochun Zhu, Honghai Liu, Xionghou Gao, Chunming Xu, Baojian Shen
Summary: The distribution of aluminum and magnesium in [Al, Mg]-ZSM-5 zeolites significantly affects their catalytic performance, and the hydrothermal synthesis method can effectively regulate the location of framework aluminum. The introduction of magnesium by this method inhibits the hydride transfer process, thereby increasing the yields of propylene in catalytic cracking reactions.
JOURNAL OF CATALYSIS
(2022)
Article
Energy & Fuels
Azadeh Zaker, Geoffrey A. Tompsett, Siwen Wang, Jesse Q. Bond, Michael T. Timko
Summary: The addition of a suitable amount of water during supercritical water assisted aromatization process can enhance the conversion rate of dodecane and the yield of BTEX products, while maintaining the crystallinity and Bronsted acid site density of ZSM-5; excessive water, however, leads to decreased cracking rate of dodecane and reduced formation of aromatic products.
Article
Chemistry, Multidisciplinary
Emad N. Shafei, Mohammed Z. Albahar, Mohammad F. Aljishi, Ali N. Aljishi, Ali S. Alnasir, Hameed H. Al-Badairy, Mohammed A. Sanhoob
Summary: A zirconia-titania-based catalyst with nanocrystal structure was synthesized to facilitate the catalytic cracking of heavy naphtha into high value-added olefins. By incorporating ZrO2 into the TiO2 framework, the catalyst exhibited increased surface acidity which enhanced the cracking of naphtha and promoted the production of olefins.
REACTION CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Applied
Beatriz Valle, Roberto Palos, Javier Bilbao, Ana G. Gayubo
Summary: The behavior of Y and ZSM-5 zeolites in catalytic cracking of bio-oil for fuel and platform chemical production was compared. The catalysts were characterized and tested in a continuous two-step catalytic cracking system, showing that HZSM-5 catalyst leads to aromatics production while HY catalyst yields aliphatic gasoline and diesel fractions. The remaining upgraded bio-oil contains light oxygenates with low phenolic compounds.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Taichi Taniguchi, Keitaro Yoneta, Shota Nakaoka, Yuta Nakasaka, Toshiyuki Yokoi, Teruoki Tago, Takao Masuda
Article
Engineering, Environmental
Yuta Nakasaka, Jun-ichi Nishimura, Teruoki Tago, Takao Masuda
CHEMICAL ENGINEERING JOURNAL
(2015)
Article
Chemistry, Analytical
Idris A. Bakare, Oki Muraza, Taichi Taniguchi, Teruoki Tago, Galal Nasser, Zain H. Yamani, Takao Masuda
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2015)
Article
Chemistry, Applied
Oki Muraza, Adedigba Abdul-lateef, Teruoki Tago, Asep B. D. Nandiyanto, Hiroki Konno, Yuta Nakasaka, Zain H. Yamani, Takao Masuda
MICROPOROUS AND MESOPOROUS MATERIALS
(2015)
Article
Chemistry, Applied
Yaqi Zhang, Yuta Nakasaka, Teruoki Tago, Aya Hirata, Yuki Sato, Takao Masuda
MICROPOROUS AND MESOPOROUS MATERIALS
(2015)
Article
Chemistry, Physical
Taichi Taniguchi, Yuta Nakasaka, Keitaro Yoneta, Teruoki Tago, Takao Masuda
Article
Energy & Fuels
Mohammed A. Sanhoob, Oki Muraza, Taichi Taniguchi, Teruoki Tago, Gaku Watanabe, Takao Masuda
Article
Energy & Fuels
Hisaki Kondoh, Kumiko Tanaka, Yuta Nakasaka, Teruoki Tago, Takao Masuda
Article
Chemistry, Applied
Hisaki Kondoh, Yuta Nakasaka, Tatsuya Kitaguchi, Takuya Yoshikawa, Teruoki Tago, Takao Masuda
FUEL PROCESSING TECHNOLOGY
(2016)
Article
Engineering, Chemical
Galal A. Nasser, Teguh Kurniawan, Teruoki Tago, Idris A. Bakare, Taichi Taniguchi, Yuta Nakasaka, Takao Masuda, Oki Muraza
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2016)
Article
Chemistry, Applied
Yaqi Zhang, Aya Hirata, Yuta Nakasaka, Teruoki Tago, Taichi Taniguchi, Takao Masuda
MICROPOROUS AND MESOPOROUS MATERIALS
(2016)
Article
Chemistry, Applied
Taichi Taniguchi, Yuta Nakasaka, Keitaro Yoneta, Teruoki Tago, Takao Masuda
MICROPOROUS AND MESOPOROUS MATERIALS
(2016)
Article
Chemistry, Multidisciplinary
Mohammed A. Sanhoob, Oki Muraza, Teruoki Tago, Taichi Taniguchi, Gaku Watanabe, Takao Masuda
RESEARCH ON CHEMICAL INTERMEDIATES
(2016)
Review
Energy & Fuels
Teruoki Tago, Yuta Nakasaka, Takao Masuda
JOURNAL OF THE JAPAN PETROLEUM INSTITUTE
(2014)
Proceedings Paper
Engineering, Mechanical
Takao Masuda, Teruoki Tago, Takuya Yoshikawa
PROCESS AND ADVANCED MATERIALS ENGINEERING
(2014)
Article
Chemistry, Applied
Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang
Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma
Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Review
Chemistry, Applied
Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang
Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He
Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Lucie Havelkova, Bogdana Bashta, Michaela Vankova, Jiri Zednik, Jiri Brus, Jan Svoboda, Alice Vagenknechtova, Jan Sedlacek
Summary: An atom-economic one-step chain-growth coordination homopolymerization providing high yields of functionalized hyper-cross-linked polyacetylenes with a permanent micro/mesoporous texture and a BET area of up to 1062 m2/g is reported. The homopolymerization is highly compatible with the heteroatom groups of the monomers and allows the preparation of well-defined porous networks with a wide spectrum of univalent groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng
Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Pingping Li, Lei Han, Donghun Kim, Kemal Celebi
Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang
Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi
Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi
Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Nataliia Reinders, Martin Durovic, Pavla Honcova, Zaneta Dohnalova, Jana Luxova, Stanislav Slang, Jhonatan Rodriguez-Pereira, Petra S. Sulcova
Summary: This study presents a new method for preparing a microporous Ni2P/C catalyst with high catalytic activity. The redox reaction and carbon matrix formation during high-temperature treatment contribute to the stability and activity of the catalyst. Experimental and analytical results suggest that the microporous structure of the composite plays a crucial role in its catalytic performance. These findings are important for practical applications of efficient hydrogen production by water electrolysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Ana Raquel Bertao, Viktoriya Ivasiv, Cristina Almeida-Aguiar, Patricia R. Correia, Antonio M. Fonseca, Manuel Banobre-Lopez, Fatima Baltazar, Isabel C. Neves
Summary: This study developed a zeolite-based delivery system (ZDS) using silver and 5-Fluorouracil as antimicrobial and antineoplastic agents. The ZDS was characterized and its antimicrobial properties were investigated, showing better antibacterial effectiveness for the ZDS containing both silver and 5-FU.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Naonobu Katada, Nobuki Ozawa, Etsushi Tsuji, Keigo Kanehara, Akiho Otsuka, Taiga Sakamoto, Kirari Umezawa, Hitoshi Matsubara, Satoshi Suganuma, Momoji Kubo
Summary: First principles calculations were used to investigate the pathway for methylation of benzene with methane catalyzed by MFI type zeolite-supported Co species. The strong adsorption of benzene on Co is found to lower the activation energy for methane dissociation and promote the formation of toluene precursor. The activation energy of methane dissociation is also affected by the Al-Al distance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Yuan Liu, An T. Ta, Kyoung Chul Park, Shenyang Hu, Natalia B. Shustova, Simon R. Phillpot
Summary: We use density functional theory to investigate the interactions of cerium, americium, and curium cations with crown ethers. Our results demonstrate that crown ethers can capture cerium, americium, and curium ions, and modifying the crown ether structure by substituting nitrogen atoms for oxygen atoms significantly increases their binding energies with radionuclides.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Zhengwu Peng, Shixing Wang, Yihui Wu, Xiang Liu, Hongliang Liu, Dekun Zhang, Likang Fu
Summary: An efficient adsorbent for recovery of germanium was prepared and characterized in this study. The adsorption behavior of Ge(IV) on the adsorbent was analyzed, and the results showed that it follows pseudo-secondary kinetic model and Langmuir isotherm model. The adsorbent exhibited good anionic anti-interference ability and can still maintain high adsorption efficiency after repeated adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)