Mesoporous tin oxide-supported phosphomolybdic acid as high performance acid catalysts for the synthesis of hydroquinone diacetate
作者： Amr Awad Ibrahim , Shawky M. Hassan , Mohammed A. Mannaa
DOI: 10.1016/J.COLSURFA.2019.124248
关键词:
摘要: Abstract Mesoporous SnO2 nanoparticles were prepared via surfactant-assisted sol-gel method and then modified with different amount (3–65) wt.% of phosphomolybdic acid (PMA) using the impregnation method. The catalysts characterized by thermal analysis (TGA DTA), XRD, TEM, FTIR N2 adsorption-desorption at −196 °C (BET BJH). 25 %PMA/SnO2 calcined 400°, 450°, 550o, 650 °C to study effect calcination temperature on structural properties, surface acidity, catalytic activity Keggin structure PMA. acidity was measured potentiometric titration spectra chemisorbed pyridine. It is observed that crystallite size decreased increasing PMA content increased while area (SBET) loading reach a maximum 25 wt%. enhanced after addition shown both Bronsted Lewis sites. tested synthesis hydroquinone diacetate. sample 55 wt.% showed highest activity.
sci-hub.se 参考文章(59)
Sujata Mallik, Suswati S. Dash, Kulamani M. Parida, B.K. Mohapatra, Synthesis, characterization, and catalytic activity of phosphomolybdic acid supported on hydrous zirconia. joint international conference on information sciences. ,vol. 300, pp. 237- 243 ,(2006) , 10.1016/J.JCIS.2006.03.047
Hongwei Che, Shuhua Han, Wanguo Hou, Aifeng Liu, Xiaojuan Yu, Yuanyuan Sun, Shasha Wang, Ordered mesoporous tin oxide with crystalline pore walls: Preparation and thermal stability Microporous and Mesoporous Materials. ,vol. 130, pp. 1- 6 ,(2010) , 10.1016/J.MICROMESO.2009.08.017
Jing Zhao, Weinan Wang, Yinping Liu, Jinming Ma, Xiaowei Li, Yu Du, Geyu Lu, Ordered mesoporous Pd/SnO2 synthesized by a nanocasting route for high hydrogen sensing performance Sensors and Actuators B-chemical. ,vol. 160, pp. 604- 608 ,(2011) , 10.1016/J.SNB.2011.08.035
Awad I Ahmed, SA El-Hakam, AS Khder, WS Abo El-Yazeed, None, Nanostructure sulfated tin oxide as an efficient catalyst for the preparation of 7-hydroxy-4-methyl coumarin by Pechmann condensation reaction Journal of Molecular Catalysis A-chemical. ,vol. 366, pp. 99- 108 ,(2013) , 10.1016/J.MOLCATA.2012.09.012
Naonobu Katada, Jun-ichi Endo, Kei-ichi Notsu, Naoko Yasunobu, Norihiro Naito, Miki Niwa, Superacidity and Catalytic Activity of Sulfated Zirconia Journal of Physical Chemistry B. ,vol. 104, pp. 10321- 10328 ,(2000) , 10.1021/JP002212O
Jeong Young Park, L. Robert Baker, Gabor A. Somorjai, Role of hot electrons and metal-oxide interfaces in surface chemistry and catalytic reactions. Chemical Reviews. ,vol. 115, pp. 2781- 2817 ,(2015) , 10.1021/CR400311P
Awad I Ahmed, SA El-Hakam, MA Abd Elghany, WS Abo El-Yazeed, None, Synthesis and characterization of new solid acid catalysts, H3PW12O40 supported on nanoparticle tin oxide: An efficient catalyst for the preparation of 7-hydroxy-4-methylcoumarin Applied Catalysis A-general. ,vol. 407, pp. 40- 48 ,(2011) , 10.1016/J.APCATA.2011.08.020
Pannipa Wongkrua, Titipun Thongtem, Somchai Thongtem, Synthesis of h- and α-MoO 3 by refluxing and calcination combination: phase and morphology transformation, photocatalysis, and photosensitization Journal of Nanomaterials. ,vol. 2013, pp. 79- ,(2013) , 10.1155/2013/702679
Veda Ramaswamy, Pallavi Shah, Karoly Lazar, A. V. Ramaswamy, Synthesis, Characterization and Catalytic Activity of Sn-SBA-15 Mesoporous Molecular Sieves Catalysis Surveys From Asia. ,vol. 12, pp. 283- 309 ,(2008) , 10.1007/S10563-008-9060-6
AS Khder, EA El-Sharkawy, SA El-Hakam, AI Ahmed, None, Surface characterization and catalytic activity of sulfated tin oxide catalyst Catalysis Communications. ,vol. 9, pp. 769- 777 ,(2008) , 10.1016/J.CATCOM.2007.08.022