Article
Chemistry, Applied
Mei-hua Zhu, Libin Chen, Wenjuan Ding, Lingling Zou, Ting Wu, Yuqin Li, Na Hu, Xiangshu Chen, Hidetoshi Kita
Summary: Compact and tubular TS-2 zeolite membrane was successfully fabricated on a mullite support. The membrane had high surface area, pore capacity, and mesoporous volume. The effect of crystallization temperature and time on the catalytic performance was investigated, revealing that the TS-2 zeolite membrane exhibited excellent catalytic performance in the phenol hydroxylation reaction.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Guoju Yang, Ziyi Qiu, Sainan Peng, Maiyan Nan, Lin Li, Ying Hou, Xiaoxin Chen
Summary: This study successfully prepared nano-sized hierarchical titanosilicate zeolites with high crystal yield using a one-pot nanoseed-assisted approach, exhibiting excellent catalytic activity and selectivity in the epoxidation reaction of alkenes.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Lingling Zou, Meihua Zhu, Juan Liu, Libin Chen, Qilu Yao, Na Hu, Xiangshu Chen, Hidetoshi Kita
Summary: In this study, a good inter-grown TS-2 zeolite layer is successfully prepared on the outer surface of porous millimeter alpha-Al2O3 sphere by secondary hydrothermal synthesis. The research investigates the influences of synthesis parameters on Ti active micro-environment, crystal morphology, and catalytic performance of the supported TS-2 zeolites. It also studies the formation process of the supported TS-2 zeolites and determines the optimal synthesis conditions for catalytic performance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Multidisciplinary
Amanda Justino de Morais, Airton Germano Bispo-Jr, Flavia de Sousa Ferreira, Italo Odone Mazali, Fernando Aparecido Sigoli
Summary: This study investigates the influence of doping concentration, excitation pump power density, and lanthanide-lanthanide separation on the luminescence performance of lanthanide-doped beta-NaGdF4 nanoparticles. The results help to design nanoparticles with versatile emission properties for anti-counterfeiting and energy conversion applications.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yi-Tian Wang, Si-Ming Wu, Guo-Qiang Luo, Shi-Tian Xiao, Fu-Fei Pu, Li-Ying Wang, Gang-Gang Chang, Ge Tian, Xiao-Yu Yang
Summary: A core-shell structured Pd@TS-1@meso-SiO2 catalyst with confined Pd nanometals has been synthesized, showing higher activity and stability in the hydrogenation of nitrobenzene. The synergy effect between Pd and acid sites in TS-1 has been proposed.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Analytical
Thi To Nga Phan, Thi Tra My Dinh, Minh Duc Nguyen, Dan Li, Chi Nhan Phan, Trung Kien Pham, Cong Tu Nguyen, Thanh Huyen Pham
Summary: The hollow LaFeO3 sensor synthesized by a hydrothermal method with cetyl-trimethylammonium bromide exhibited enhanced sensing performance towards ethanol gas, showing potential for future practical use in trace ethanol detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Review
Chemistry, Multidisciplinary
Tobias Weissenberger, Albert G. F. Machoke, Bastian Reiprich, Wilhelm Schwieger
Summary: Hierarchically structured zeolites can enhance mass transport and alleviate diffusion limitations in micropores. Macropores with diameters over 50 nm have intrinsic advantages over mesopores for catalytic applications, and methods for preparing zeolites with additional macropores have been developed recently.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Engineering, Environmental
Shuangchun Lu, Qingling Liu, Rui Han, Jiaqi Shi, Miao Guo, Chunfeng Song, Na Ji, Xuebin Lu, Degang Ma
Summary: This study reports a strategy to synthesize Y zeolite and hydrophobic organic polymer core-shell composites, significantly improving the hydrophobicity and toluene adsorption capacity of Y zeolite. The composite exhibits excellent adsorption performance under both dry and wet conditions, suitable for practical applications. Such composite strategy can be applied to other zeolites for hydrophobic modification, increasing the adsorption capacity under wet conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Yue-Wei Wei, Guang Yang, Xi-Xi Xu, Yan-Yan Liu, Nai-Xin Kang, Bao-Jun Li, Yong-Zhao Wang, Yong-Xiang Zhao
Summary: In this paper, a carbon-coated zeolite prepared by high temperature calcination using glucose as carbon source was used as a composite support for ultrafine Ru nanoparticles, which showed outstanding catalytic activity in the hydrolysis of ammonia borane (AB). The catalyst exhibited a turnover frequency of 892 min(-1) at room temperature, outperforming many previously reported catalysts. The excellent catalytic activity was attributed to the carbon layer effectively limiting Ru nanoparticle aggregation and the role of zeolite in pre-activating water. The study of catalyst concentration, AB concentration, and NaOH concentration further investigated the hydrolysis rate of AB.
Article
Chemistry, Applied
Manyun Wang, Xu Wang, Qing You, Yushuai Wu, Xin Yang, Huiyong Chen, Baoyu Liu, Qingqing Hao, Jianbo Zhang, Xiaoxun Ma
Summary: The study presents a facile route for preparing stable hierarchically layered LTS-1 zeolites using dual templates and demonstrates their superior catalytic activity in the epoxidation of cyclooctene. By adjusting the dual-template ratios, effective interlayer self-pillaring was achieved with enriched TiO6 species.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Engineering, Chemical
Qingxin Yang, Yuming Li, Zhentao Chen, Linxie Hu, Zhenye Li, Yajun Wang, Zhen Zhao, Chunming Xu, Guiyuan Jiang
Summary: By introducing a SiO2 shell, the catalytic performance of HZSM-5 in n-butane cracking was significantly improved, achieving a higher conversion rate. The study successfully quantified the diffusion property and established a quantitative relationship between diffusion and catalytic performance.
Article
Chemistry, Applied
Min Zhang, Shenyong Ren, Qiaoxia Guo, Baojian Shen
Summary: TS-1 is a typical microporous zeolite that may hinder the diffusion of reaction products and cause secondary side reactions. However, by creating hierarchical pores of micropores and mesoporous/macropores, the performance of TS-1 in heterogeneous catalytic reactions can be greatly improved.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Yuanchao Shao, Hongjuan Wang, Xuefei Liu, Philip Ryan Haydel, Tianduo Li, Jianbin Chen, Peng Huang, Qiang Xiao, Takashi Tatsumi, Jingui Wang
Summary: Hierarchically porous zeolites are a type of catalyst with improved catalytic performances compared to conventional microporous-only zeolites, due to enhanced mass transportation among meso/macropores. The strategy of controlling growth/crystallization in a solidified hydrogel system allows for the synthesis of TS-1 zeolites with hierarchical porosity, single-crystalline structure, and high catalytic performance in alkene oxidations. This method offers a cost-effective alternative to traditional synthetic methods.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Pengyu Zhao, Zhiguang Li, Yue Zhang, Debao Cui, Qingchun Guo, Zhipeng Dong, Guodong Qi, Jun Xu, Feng Deng
Summary: In this study, TS-1 zeolites were prepared using different synthetic methods, and it was found that the synthetic approach can control the crystallinity and distribution of Ti-Lewis acid sites in TS-1 zeolite. The structure-activity relationship of TS-1 zeolite was established, revealing that the concentration of Ti-Lewis acid sites determines the conversion rate of the reaction, while both the crystallinity and distribution of Ti-Lewis acid sites significantly influence the selectivity to the target product.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Organic
E. Luzina, I. A. Shamanaeva, E. Parkhomchuk
Summary: The synthesis of Silicalite-1 nanocrystals and zeolite beta microcrystals, as well as their composites, involved depositing Silicalite-1 nanocrystals on zeolite beta crystals with subsequent hydrothermal treatment. Characterization of the materials showed that coating zeolite beta with an inert Silicalite-1 shell resulted in decreased microporosity and total acidity, as well as the disappearance of strong acid sites.
PETROLEUM CHEMISTRY
(2021)
