Article
Engineering, Chemical
Vinayak Hegde, Parimal Pandit, Pranita Rananaware, Varsha P. Brahmkhatri
Summary: Sulfonic acid functionalized mesoporous silica catalysts with different morphology were designed and characterized. The cube-shaped catalyst exhibited better catalytic activity compared to the spherical-shaped catalysts, and it also showed good regenerability.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Environmental
Xi Cheng, Qingge Feng, Dachao Ma, Hongcheng Chen, Xu Zeng, Feifan Xing, Jiayang Teng
Summary: By improving the synthesis process of the catalyst and characterizing the structure of materials, the catalytic activity and stability of CH3-SBA-15-SO3H material in converting glucose to levulinic acid were examined. The results showed that CH3-SBA-15-SO3H exhibited good recyclability and hydrothermal stability, indicating its potential in the development and utilization of biomass resources.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Mahsa Niakan, Majid Masteri-Farahani, Farzad Seidi
Summary: This study described the catalytic application of propylsulfonic acid modified mesoporous SBA-16 for producing 5-hydroxymethylfurfural (HMF) for the first time. The successful immobilization of propylsulfonic acid groups on SBA-16 was assessed through various characterization techniques. The SO3H@SBA-16 material showed outstanding catalytic efficiency and recyclability in fructose conversion to HMF, achieving high yields in specific reaction conditions.
Article
Chemistry, Applied
Agata Wawrzynczak, Sylwia Jarmolinska, Izabela Nowak
Summary: In this study, ordered nanostructured KIT-6 silica with different numbers of sulfonic groups were synthesized. The amount of the functional group precursor used affected the structural and textural parameters of the synthesized materials. The samples modified by grafting exhibited a stable mesoporous structure, while the ones synthesized by co-condensation showed characteristics of KIT-6 materials. The developed synthesis procedures yielded potential solid acid catalysts with desirable catalytic performances.
Article
Chemistry, Applied
Maoqi Cao, Sailan Sun, Chengmei Long, Jun Luo, Hongtao Zou, Dawang Wu
Summary: A newly designed two dimensional hexagonal bi-functionalized mesoporous organosilica material (b-MPOS) with high specific surface area and pore diameter was synthesized through a post-grafting synthetic pathway. This material, containing both acid and basic functional groups, was used as a heterogeneous catalyst for carbohydrates transformation, resulting in a high product yield of 86 mol% in synthesizing 5-hydroxymethylfurfural (HMF) from fructose under microwave irradiated heating conditions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Fatemeh Rajabi, Mika Sillanpaa, Christophe Len, Rafael Luque
Summary: The study demonstrates the efficient catalytic performance of an ionic solid nanomaterial PMO-Py-IL for the one-pot Biginelli condensation reaction under solvent-free conditions. The catalyst exhibits remarkable stability and reusability, making it a promising candidate for green synthesis.
Article
Engineering, Chemical
Dahai Pan, Yu Ru, Tonglian Liu, Yongjie Wang, Feng Yu, Shuwei Chen, Xiaoliang Yan, Binbin Fan, Ruifeng Li
Summary: Ordered mesoporous Ti-Al composite oxides (OMTA-x) with variable Al/Ti atomic ratios were prepared and evaluated as catalysts for oxidative dehydrogenation of ethylbenzene to styrene with CO2. The OMTA-x catalysts exhibited significantly improved catalytic performance compared to Al2O3-supported titania catalyst.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Ying Guo, Wei David Wang, Shengyu Li, Yin Zhu, Xiaoyu Wang, Xiao Liu, Yuan Zhang
Summary: By incorporating the versatile organocatalyst TEMPO into the pores of an FDU-type mesoporous polymer via a pore surface engineering strategy, we obtained FDU-15-TEMPO with highly ordered mesoporous organic framework and enhanced stability. This material showed excellent catalytic activity in selective oxidation and oxidative synthesis reactions, and could be easily recovered and reused for up to 7 consecutive cycles.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Engineering, Chemical
Chun Pei, Shangjun Chen, Rongrong Song, Fei Lv, Ying Wan
Summary: By utilizing a metal-ligand coordination assisted-self-assembly approach, three gold nanoparticles were successfully encapsulated in ordered mesoporous carbon with large pores and thick pore walls. The strong coordination between the gold species and the mercapto groups, as well as the thick porous walls, contribute to the dispersion and stability of the gold nanoparticles at high temperatures and their reactivity and stability in water.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Chenyi Yuan, Xiqing Wang, Xuanyu Yang, Abdulaziz A. Alghamdi, Fahad A. Alharthi, Xiaowei Cheng, Yonghui Deng
Summary: Novel sulfonic acid functionalized core-shell Fe3O4@carbon microspheres were designed and synthesized as an efficient and recyclable heterogeneous acid catalyst. These microspheres possess magnetic properties, high saturation magnetization value, uniform core-shell structure, and abundant acid functional groups. They exhibited high selectivity and recyclability in the acetalization reaction, demonstrating promising potential for industrial applications.
CHINESE CHEMICAL LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Desinta Dwi Ristiana, Suyanta Suyanta, Nuryono Nuryono
Summary: Ethyl levulinate (EL) is an important additive in biodiesel and industrial applications. The most common method for its production involves esterification of biomass-derived levulinic acid (LA) with ethanol (EtOH) using corrosive mineral acid catalysts. To improve the process, researchers have focused on developing highly active solid acid catalysts. In this study, the catalytic activity of sulfonic acid-functionalized silica (SiO2-SO3H) with varying hydrophobicity was investigated. It was found that longer alkyl chains decreased acidity and catalytic activity, while increasing particle size and hydrophobicity. Silica modified with the methyl group (SiO2-SO3H/Me) showed the highest acidity and catalytic performance.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Shuolin Zhou, Jinhua Lai, Xianxiang Liu, Geng Huang, Gaolin You, Qiong Xu, Dulin Yin
Summary: Sulfonic acid functionalized titanate nanotubes were prepared and showed excellent catalytic performance and stability.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Sheereen Afaq, Muhammad Usman Akram, Wasif Mahmood Ahmed Malik, Muhammad Ismail, Abdul Ghafoor, Muhammad Ibrahim, Mehr un Nisa, Muhammad Naeem Ashiq, Francis Verpoort, Adeel Hussain Chughtai
Summary: In this study, a novel acyl-amide-containing tetracarboxylate ligand was synthesized and used for the design of MOFs with guest accessible functional organic sites. The prepared MOF showed superior catalytic activity for Knoevenagel condensation and could be easily recovered and recycled.
Article
Chemistry, Physical
Putrakumar Balla, Prem Kumar Seelam, Rajendiran Rajesh, Ravi Balaga, Prathap Challa, G. Kauslya Sasikumar, Vijayanand Perupogu, Ulla Lassi, Kim Sungtak
Summary: The greener synthesis of eco-friendly GVL fuel additive through the hydrogenation of LA entails the use of highly active and stable CuNPs embedded in the OMC support material. The Cu/OMC nanocatalyst exhibits remarkable activity and stability due to the confinement effects in the mesoporous carbon and the highly dispersed Cu particles. The synthesized catalyst maintains its stability and activity even after 60 hours of continuous testing under optimized conditions.
CATALYSIS COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Plinio Innocenzi
Summary: The synthesis of ordered mesoporous films via self-assembly is a significant achievement in nanoscience, but controlling the complex chemical-physical phenomena caused by solvent evaporation remains challenging. While there have been advancements in basic research, more understanding is needed on the self-organization mechanism and the physics and chemistry of mesoscale porosity.