Abstract
An attempt to decrease coke formation from phenol hydroxylation on iron catalyst supported on zeolite beta (Fe/HBEA) was investigated. HBEA was dealuminated by refluxing in nitric acid. The dealumination removed all framework aluminum atoms and presumably generated hydroxyl nests of the tetrahedral vacant sites which were strongly acidic. An iron catalyst supported on dealuminated zeolite beta (Fe/D-BEA) was prepared by stirring the dealuminated HBEA in a solution of Fe(NO3)2. The obtained catalyst had an Fe loading 2.60 wt%. The Fe had an oxidation state +3 and tetrahedral coordination. After loading, the zeolite structure was slightly contracted by the insertion of Fe ions into the vacant sites and calcination. The strong acid sites on D-BEA were suppressed. When Fe/D-BEA was tested in phenol hydroxylation, a steady conversion around 56 % was reached in 6 min. Catechol and hydroquinone were the major products with the mole ratio 2:1. However, cokes were still observed. The type of cokes from Fe/D-BEA was similar to those from Fe/HBEA but the amount from Fe/D-BEA was lower. Thus, the product yields from Fe/D-BEA were higher.
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Sophiphun O, Föttinger K, Loiha S, Neramittagapong A, Prayoonpokarach S, Rupprechter G, Wittayakun J (2015) Reac Kinet Mech Cat 116:549–561
Atoguchi T, Kanougi T, Yamamoto T, Yao S (2004) J Mol Catal A 220:183–187
Corma A (2003) J Catal 216:298–312
Borade RB, Clearfield A (1992) J Phys Chem 96:6729–6737
Penzien J, Abraham A, van Bokhoven JA, Jentys A, Müller TE, Sievers C, Lercher JA (2004) J Phys Chem B 108:4116–4126
Selli E, Rossetti I, Meloni D, Sini F, Forni L (2004) Appl Cat A 262:131–136
Tago T, Konna H, Ikeda S, Yamazaki S, Ninomiya W, Nakasaka Y, Masuda T (2011) Catal Today 164:158–162
Baran R, Millot Y, Onfroy T, Krafft J-M, Dzwigaj S (2012) Microporous Mesoporous Mater 163:122–130
Batonneau-gener I, Yonli A, Hazael-pascal A, Marques JP, Lopes JM, Guisnet M, Ribeiro FR, Mignard S (2008) Microporous Mesoporous Mater 110:480–487
Marques JP, Gener I, Ayrault P, Bordado JC, Lopes JM, Ribeiro FR, Guisnet M (2005) C R Chimie 8:399–410
Dzwigaj S, Che M (2006) J Phys Chem 110:12490–12493
Gurgul J, Łątka K, Hnat I, Rynkowski J, Dzwigaj S (2013) Microporous Mesoporous Mater 168:1–6
Čapek L, Kreibich V, Dědeček J, Grygar T, Wichterlová B, Sobalík Z, Martens JA, Brosius R, Tokarová V (2005) Microporous Mesoporous Mater 80:279–289
Kumar MS, Schwidder M, Grückner A (2004) J Catal 227:384–397
Dzwigaj S, Stievano L, Wagner FE, Che M (2007) J Phys Chem Solids 68:1885–1891
Berlier G, Pourny M, Bordiga S, Spoto G, Zecchina A, Lamberti C (2005) J Catal 229:45–54
Srivastava R, Iwasa N, Fujita S-I, Arai M (2009) Catal Lett 130:655–663
Boroń P, Chmielarz L, Gurgul J, Łątka K, Gil B, Krafft J-M, Dzwigaj S (2014) Catal Today 235:210–225
Hegde SG, Kumar R, Bhat RN, Ratnasamy P (1989) Zeolites 9:231–237
Wang H, Xin W (2001) Catal Lett 76:225–229
Atoguchi T, Kanougi T (2004) J Mol Catal A 222:253–257
Senderova E, Halaszb I, Olson DH (2014) Microporous Mesoporous Mater 186:94–100
Choi J-S, Yoon S-S, Jang S-H, Ahn W-S (2006) Catal Today 111:280–287
Liang X, Yang R, Li G, Hu C (2013) Microporous Mesoporous Mater 182:62–72
Kullawong S, Prayoonpokarach S, Neramittagapong A, Wittayakun J (2011) J Ind Eng Chem 17:346–351
Guisnet M, Costa L, Ramôa RF (2009) J Mol Catal A 305:69–83
Germain G, Allian M, Figueras F (1996) Catal Today 32:145–148
Siffert S, Gaillard L, Su B-L (2000) J Mol Catal A 153:267–279
Liu Z, Dong X, Zhu Y, Emwas A, Zhang D, Tian Q, Han Y (2015) ACS Catal 5:5837–5845
Acknowledgments
Scholarship for Onsulang Sophiphun is from the office of the Higher Education Commission, Thailand under the program Strategic Scholarships for Frontier Research. We also acknowledge the Synchrotron Light Research Institute for the X-ray absorption beam time.
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Sophiphun, O., Demir, D., Föttinger, K. et al. Decrement of coke from phenol hydroxylation on iron on zeolite beta by employing dealuminated support. Reac Kinet Mech Cat 117, 705–713 (2016). https://doi.org/10.1007/s11144-015-0971-8
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DOI: https://doi.org/10.1007/s11144-015-0971-8