Journal articles on the topic 'Tungstophosphoric acid'
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Alharthi, Abdulrahman I. "Simple Protocol for the Knoevenagel Condensation Under Solvent Free Conditions using Tungstophosphoric Acid as Catalyst." Asian Journal of Chemistry 31, no. 10 (August 30, 2019): 2181–84. http://dx.doi.org/10.14233/ajchem.2019.22072.
Full textBamoharram, Fatemeh F., Ali Ahmadpour, Majid M. Heravi, and Mohammad J. Sane Charkhi. "Bulk and Activated Carbon-Supported Tungstophosphoric Acid as Recyclable and Green Catalyst for One-Pot Synthesis ofβ-Acetamido Ketones and Esters." E-Journal of Chemistry 8, no. 2 (2011): 689–96. http://dx.doi.org/10.1155/2011/741328.
Full textAlharthi, Abdulrahman I. "Efficient Catalytic Performance of Calcined Tungstophosphoric Acid for the Claisen-Schmidt Condensation under Solvent-Free Reaction." Asian Journal of Chemistry 31, no. 11 (September 28, 2019): 2579–84. http://dx.doi.org/10.14233/ajchem.2019.22219.
Full textJafarzadeh, Mohammad, Kamal Amani, and Farzad Nikpour. "Effective and regioselective iodination of arenes using iron(III) nitrate in the presence of tungstophosphoric acid." Canadian Journal of Chemistry 83, no. 10 (October 1, 2005): 1808–11. http://dx.doi.org/10.1139/v05-187.
Full textGuo, Hong Qi, Gong Yan, Ming Qing Chen, and Shi Rong Liu. "Assembling of 12-Tungstophosphoric Acid into Amino-Modified SBA-15 and its Catalytic Performance." Advanced Materials Research 465 (February 2012): 224–28. http://dx.doi.org/10.4028/www.scientific.net/amr.465.224.
Full textYang, Kai-Li, Shan Huang, Hu Pan, Heng Zhang, Xiao-Fang Liu, and Song Yang. "Polyoxometalate-MgF2 hybrids as heterogeneous solid acid catalysts for efficient biodiesel production." RSC Advances 7, no. 53 (2017): 33335–43. http://dx.doi.org/10.1039/c7ra06080g.
Full textDias, José A., John P. Osegovic, and Russell S. Drago. "The Solid Acidity of 12-Tungstophosphoric Acid." Journal of Catalysis 183, no. 1 (April 1999): 83–90. http://dx.doi.org/10.1006/jcat.1998.2389.
Full textVidoeski, Bojan, Svetlana Jovanovic, Ivanka Holclajtner-Antunovic, Danica Bajuk-Bogdanovic, Milica Budimir, Zoran Markovic, and Biljana Todorovic-Markovic. "Raman study of the interactions between highly ordered pyrolytic graphite (HOPG) and polyoxometalates: The effects of acid concentration." Journal of the Serbian Chemical Society 81, no. 7 (2016): 777–87. http://dx.doi.org/10.2298/jsc160301055v.
Full textChe, Penghua, Fang Lu, Xiaoqin Si, and Jie Xu. "Catalytic etherification of hydroxyl compounds to methyl ethers with 1,2-dimethoxyethane." RSC Advances 5, no. 31 (2015): 24139–43. http://dx.doi.org/10.1039/c4ra15919e.
Full textSrinivasa Rao, B., Yogita, D. Dhana Lakshmi, P. Krishna Kumari, and N. Lingaiah. "Influence of metal oxide and heteropoly tungstate location in mesoporous silica towards catalytic transfer hydrogenation of furfural to γ-valerolactone." Sustainable Energy & Fuels 5, no. 14 (2021): 3719–28. http://dx.doi.org/10.1039/d1se00340b.
Full textHolclajtner-Antunović, I., U. B. Mioč, M. Todorović, Z. Jovanović, M. Davidović, D. Bajuk-Bogdanović, and Z. Laušević. "Characterization of potassium salts of 12-tungstophosphoric acid." Materials Research Bulletin 45, no. 11 (November 2010): 1679–84. http://dx.doi.org/10.1016/j.materresbull.2010.06.064.
Full textKocaman, Elif, Özge Akarçay, Nur Bağlar, Serdar Çelebi, and Alper Uzun. "Isobutene oligomerization on MCM-41-supported tungstophosphoric acid." Molecular Catalysis 457 (October 2018): 41–50. http://dx.doi.org/10.1016/j.mcat.2018.07.013.
Full textMin, Zhen-Li, and Xia-Min Hu. "Tungstophosphoric Acid-Catalyzed Synthesis of Pyrazolones in Water." Asian Journal of Chemistry 25, no. 13 (2013): 7290–92. http://dx.doi.org/10.14233/ajchem.2013.14550.
Full textCaiado, M., A. Machado, R. N. Santos, I. Matos, I. M. Fonseca, A. M. Ramos, J. Vital, A. A. Valente, and J. E. Castanheiro. "Alkoxylation of camphene over silica-occluded tungstophosphoric acid." Applied Catalysis A: General 451 (January 2013): 36–42. http://dx.doi.org/10.1016/j.apcata.2012.11.007.
Full textPatel, Anish, and Anjali Patel. "Nickel exchanged supported 12-tungstophosphoric acid: synthesis, characterization and base free one-pot oxidative esterification of aldehyde and alcohol." RSC Advances 9, no. 3 (2019): 1460–71. http://dx.doi.org/10.1039/c8ra08419j.
Full textJuan, Joon Ching, Yarmo Mohd Ambar, and Jing Chang Zhang. "Tungstophosphoric Acid Entrapped on Mesoporous Silica via Sol Gel Technique." Advanced Materials Research 11-12 (February 2006): 69–72. http://dx.doi.org/10.4028/www.scientific.net/amr.11-12.69.
Full textHolclajtner-Antunović, I. D., A. Popa, D. V. Bajuk-Bogdanović, S. Mentus, B. M. Nedić Vasiljević, and S. M. Uskoković-Marković. "Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid." Inorganica Chimica Acta 407 (October 2013): 197–203. http://dx.doi.org/10.1016/j.ica.2013.07.035.
Full textAnwar, Amin, Ali Abdel-Ghaffar, Sameh Aboul-Fotouh, and Ebeid Fikry. "Surface Studies and Nature of Active Sites of Supported Heteropolyacids as Catalysts in Methanol Dehydration." Collection of Czechoslovak Chemical Communications 59, no. 4 (1994): 820–32. http://dx.doi.org/10.1135/cccc19940820.
Full textBasahel, Sulaiman N., Nesreen S. Ahmed, Katabathini Narasimharao, and Mohamed Mokhtar. "Simple and efficient protocol for synthesis of pyrido[1,2-a]pyrimidin-4-one derivatives over solid heteropolyacid catalysts." RSC Advances 6, no. 15 (2016): 11921–32. http://dx.doi.org/10.1039/c5ra22180c.
Full textŠkipina, B., T. Čajkovski, M. Davidović, D. Čajkovski, V. Likar-Smiljanić, and U. B. Mioč. "Conductivity of Grains and Grain Boundaries in Polycrystalline Heteropoly Acid Salts." Materials Science Forum 494 (September 2005): 101–6. http://dx.doi.org/10.4028/www.scientific.net/msf.494.101.
Full textTiwari, Manishkumar S., and Ganapati D. Yadav. "Novel aluminium exchanged dodecatungstophosphoric acid supported on K-10 clay as catalyst: benzoylation of diphenyloxide with benzoic anhydride." RSC Advances 6, no. 54 (2016): 49091–100. http://dx.doi.org/10.1039/c6ra05379c.
Full textLópez-Salinas, E., J. G. Hernández-Cortéz, I. Schifter, E. Torres-Garcı́a, J. Navarrete, A. Gutiérrez-Carrillo, T. López, P. P. Lottici, and D. Bersani. "Thermal stability of 12-tungstophosphoric acid supported on zirconia." Applied Catalysis A: General 193, no. 1-2 (February 2000): 215–25. http://dx.doi.org/10.1016/s0926-860x(99)00431-7.
Full textJin, Dingfeng, Zhaoyin Hou, Yongming Luo, and Xiaoming Zheng. "Synthesis of dimethyldiphenylmethane over supported 12-tungstophosphoric acid (H3PW12O40)." Journal of Molecular Catalysis A: Chemical 243, no. 2 (January 2006): 233–38. http://dx.doi.org/10.1016/j.molcata.2005.08.037.
Full textDec, Steven F., and Andrew M. Herring. "Structure and Dynamics of Disodium Hydrogen 12-Tungstophosphoric Acid." Journal of Physical Chemistry B 108, no. 33 (August 2004): 12339–51. http://dx.doi.org/10.1021/jp038044s.
Full textKuang, Wenxing, Alain Rives, Michel Fournier, and Robert Hubaut. "Structure and reactivity of silica-supported 12-tungstophosphoric acid." Applied Catalysis A: General 250, no. 2 (September 2003): 221–29. http://dx.doi.org/10.1016/s0926-860x(03)00239-4.
Full textChoi, Saemin, Yong Wang, Zimin Nie, Jun Liu, and Charles H. F. Peden. "Cs-substituted tungstophosphoric acid salt supported on mesoporous silica." Catalysis Today 55, no. 1-2 (January 2000): 117–24. http://dx.doi.org/10.1016/s0920-5861(99)00231-x.
Full textLesbani, Aldes, Arianti Marpaung, Najma Annuria Fithri, and Risfidian Mohadi. "12-Tungstophosphoric Acid/Silica Catalyst for Oxidation of Benzothiophene." Asian Journal of Chemistry 28, no. 3 (2016): 617–21. http://dx.doi.org/10.14233/ajchem.2016.19435.
Full textMioc, Ubavka, Marija Todorovic, Snezana Uskokovic-Markovic, Zoran Nedic, and Nada Bosnjakovic. "A spectroscopic investigation of 12-tungstophosphoric acid alkali salts." Journal of the Serbian Chemical Society 65, no. 5-6 (2000): 399–406. http://dx.doi.org/10.2298/jsc0006399m.
Full textPérez, Maria E., Diego M. Ruiz, Juan C. Autino, Mirta N. Blanco, Luis R. Pizzio, and Gustavo P. Romanelli. "Mesoporous titania/tungstophosphoric acid composites: suitable synthesis of flavones." Journal of Porous Materials 20, no. 6 (August 1, 2013): 1433–40. http://dx.doi.org/10.1007/s10934-013-9729-8.
Full textKeita, B., and L. Nadjo. "High resolution scanning tunneling microscopy imaging of tungstophosphoric acid." Surface Science Letters 254, no. 1-3 (August 1991): L443—L447. http://dx.doi.org/10.1016/0167-2584(91)90006-d.
Full textB�langer, R., and J. B. Moffat. "Interaction of NO and NO2 on 12-tungstophosphoric acid." Catalysis Letters 32, no. 3-4 (1995): 371–78. http://dx.doi.org/10.1007/bf00813231.
Full textKeita, B., and L. Nadjo. "High resolution scanning tunneling microscopy imaging of tungstophosphoric acid." Surface Science 254, no. 1-3 (August 1991): L443—L447. http://dx.doi.org/10.1016/0039-6028(91)90621-x.
Full textPizzio, L. R., C. V. Cáceres, and M. N. Blanco. "Acid catalysts prepared by impregnation of tungstophosphoric acid solutions on different supports." Applied Catalysis A: General 167, no. 2 (February 1998): 283–94. http://dx.doi.org/10.1016/s0926-860x(97)00328-1.
Full textKhder, Abd El Rahman S., Hassan M. A. Hassan, and M. Samy El-Shall. "Acid catalyzed organic transformations by heteropoly tungstophosphoric acid supported on MCM-41." Applied Catalysis A: General 411-412 (January 2012): 77–86. http://dx.doi.org/10.1016/j.apcata.2011.10.024.
Full textKhder, Abd El Rahman S., Hassan M. A. Hassan, and M. Samy El-Shall. "Metal-organic frameworks with high tungstophosphoric acid loading as heterogeneous acid catalysts." Applied Catalysis A: General 487 (October 2014): 110–18. http://dx.doi.org/10.1016/j.apcata.2014.09.012.
Full textFiorio, Jhonatan Luiz, Adriano Henrique Braga, Carmen Luísa Barbosa Guedes, and Liane Marcia Rossi. "Reusable Heterogeneous Tungstophosphoric Acid-Derived Catalyst for Green Esterification of Carboxylic Acids." ACS Sustainable Chemistry & Engineering 7, no. 19 (September 9, 2019): 15874–83. http://dx.doi.org/10.1021/acssuschemeng.9b01579.
Full textAparicio, M., J. Mosa, M. Etienne, and A. Durán. "Proton-conducting methacrylate–silica sol–gel membranes containing tungstophosphoric acid." Journal of Power Sources 145, no. 2 (August 2005): 231–36. http://dx.doi.org/10.1016/j.jpowsour.2005.01.071.
Full textPérez-Maqueda, Luis A., and Egon Matijević. "Preparation of Uniform Colloidal Particles of Salts of Tungstophosphoric Acid†." Chemistry of Materials 10, no. 5 (May 1998): 1430–35. http://dx.doi.org/10.1021/cm970809j.
Full textDavidović, M., T. Čajkovski, D. Čajkovski, V. Likar-Smiljanić, R. Biljić, and U. Mioč. "Microwave X-band permittivity measurements on 12-tungstophosphoric acid hexahydrate." Solid State Ionics 97, no. 1-4 (May 1, 1997): 233–38. http://dx.doi.org/10.1016/s0167-2738(97)00041-6.
Full textMioč, U. B., S. K. Milonjić, D. Malović, V. Stamenković, Ph Colomban, M. M. Mitrović, and R. Dimitrijević. "Structure and proton conductivity of 12-tungstophosphoric acid doped silica." Solid State Ionics 97, no. 1-4 (May 1, 1997): 239–46. http://dx.doi.org/10.1016/s0167-2738(97)00089-1.
Full textDavidović, M., T. Čajkovski, D. Čajkovski, V. Likar-Smiljanić, R. Biljić, U. Mioč, and Z. Nedić. "Dielectric investigation of magnesium salt of 12-tungstophosphoric acid hydrate." Solid State Ionics 125, no. 1-4 (October 1999): 411–15. http://dx.doi.org/10.1016/s0167-2738(99)00203-9.
Full textČajkovski, T., M. Davidović, P. Pissis, G. Polizos, D. Čajkovski, V. Likar-Smiljanić, S. Sredić, and U. B. Mioč. "Dielectric relaxation spectroscopy of montmorillonite doped with 12-tungstophosphoric acid." Journal of Non-Crystalline Solids 351, no. 33-36 (September 2005): 2842–48. http://dx.doi.org/10.1016/j.jnoncrysol.2005.05.032.
Full textHasik, M., W. Turek, E. Stochmal, M. Lapkowski, and A. Pron. "Conjugated Polymer-Supported Catalysts - Polyaniline Protonated with 12-Tungstophosphoric Acid." Journal of Catalysis 147, no. 2 (June 1994): 544–51. http://dx.doi.org/10.1006/jcat.1994.1171.
Full textPeng, Yanqing, Gonghua Song, and Xuhong Qian. "MICROWAVE-ASSISTED ACETALIZATION OF PENTAERYTHRITOL CATALYZED BY 12-TUNGSTOPHOSPHORIC ACID." Synthetic Communications 31, no. 24 (January 1, 2001): 3735–38. http://dx.doi.org/10.1081/scc-100108222.
Full textPingaew, Ratchanok, Supaluk Prachayasittikul, Somsak Ruchirawat, and Virapong Prachayasittikul. "Tungstophosphoric acid catalyzed synthesis of N-sulfonyl-1,2,3,4-tetrahydroisoquinoline analogs." Chinese Chemical Letters 24, no. 10 (October 2013): 941–44. http://dx.doi.org/10.1016/j.cclet.2013.06.019.
Full textShaabani, Ahmad, Maryam Behnam, and Ali Hossein Rezayan. "Tungstophosphoric acid (H3PW12O40) catalyzed oxidation of organic compounds with NaBrO3." Catalysis Communications 10, no. 7 (March 2009): 1074–78. http://dx.doi.org/10.1016/j.catcom.2008.12.059.
Full textRanga Rao, G., and T. Rajkumar. "Investigation of 12-Tungstophosphoric Acid Supported on Ce0.5Zr0.5O2 Solid Solution." Catalysis Letters 120, no. 3-4 (October 2, 2007): 261–73. http://dx.doi.org/10.1007/s10562-007-9279-2.
Full textBalaraju, M., P. Nikhitha, K. Jagadeeswaraiah, K. Srilatha, P. S. Sai Prasad, and N. Lingaiah. "Acetylation of glycerol to synthesize bioadditives over niobic acid supported tungstophosphoric acid catalysts." Fuel Processing Technology 91, no. 2 (February 2010): 249–53. http://dx.doi.org/10.1016/j.fuproc.2009.10.005.
Full textDegirmenci, Levent, Nuray Oktar, and Gulsen Dogu. "ETBE synthesis over silicotungstic acid and tungstophosphoric acid catalysts calcined at different temperatures." Fuel Processing Technology 91, no. 7 (July 2010): 737–42. http://dx.doi.org/10.1016/j.fuproc.2010.02.007.
Full textSert, Emine, and Ferhan Sami Atalay. "Esterification of Acrylic Acid with Different Alcohols Catalyzed by Zirconia Supported Tungstophosphoric Acid." Industrial & Engineering Chemistry Research 51, no. 19 (May 4, 2012): 6666–71. http://dx.doi.org/10.1021/ie202609f.
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