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The effect of supports on coke deposition on supported platinum and platinum-tin catalysts investigated by FT-IR spectroscopy

The effect of supports on coke deposition on supported platinum and platinum-tin catalysts investigated by FT-IR spectroscopy

Coke deposit is produced from ethylene on the surface of the platinum and platinum-tin catalysts supported on two various Al2 O3, SiO2 and SiO2 -Al2O3. The coke amount and the structure depend on the type and the amount of the components introduced onto the catalyst support and on the type of the support. It has been found that the surface area of the support has no significant effect on the type of species in the coke deposit. The analysis of the FT-IR spectra has shown the presence of different species on the surface of the catalysts, including carboxyl groups, pseudo-graphite (polyaromatic) structures, polyphenylene groups, acetyl groups, carbonyl groups of acetone and formate type, enol species.

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Treatment of vinasse liquid from sugarcane industry using electro-coagulation/flocculation followed by ultra filtration

LITERATURE CITED 1. Zayas, T.P., Geissler, G. & Hernandez, F. (2007). Chemical oxygen demand reduction in coffee wastewater through chemical flocculation and advanced oxidation processes. J. Environ. Sci . 19, 300–305. DOI: 10.1016/S1001-0742(07)60049-7. 2. Benincá, C., Vargas, F.T., Martins, M.L., Gonçalves, F.F., Vargas, R.P., Freire, F.B. & Zanoelo, E.F. (2016). Removal of clomazone herbicide from a synthetic effluent by electrocoagulation. Water Sci. Technol . 73, 2944–2952. DOI: 10.2166/wst.2016.133. 3. Thirugananasambandham, K

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Phenol and methylene blue photodegradation over Ti/SBA-15 materials under uv light

Abstract

Ordered SBA-15 mesoporous silica supports have been synthesized and used for incorporation of titanium with different Ti/Si weight ratio via incipient wetness impregnation. Titanium tetraisopropoxide (TTIP) was used as a source of Ti. Obtained catalysts were characterized to investigate the chemical framework and morphology by nitrogen sorption measurements, powder X-ray diffraction (XRD), X-ray fluorescence elemental analysis (XRF), transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS) and Fourier transform infrared photoacoustic spectroscopy (FT-IR/PAS). The photocatalytic degradation of phenol and methylene blue water solutions were selected as a probe reactions to the photoactivity test of prepared samples and to verify the potential application of these materials for water purification. Experimental results indicate that the photocatalytic activity of Ti/Si mixed materials depends on the adsorption ability of composites and the photocatalytic activity of the titanium oxide.

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Novel biocompatible transversal pneumatic artificial muscles made of PDMS/PET satin composite

Abstract

In this study novel transversal pneumatic artificial muscles (TPAM), made from composite – poly(dimethylsiloxane) (PDMS) matrix membrane and poly(ethylene terephthalate) (PET) satin reinforcement, are presented. Miniature TPAM consists of a flexible internal braid (IB) reinforcing the membrane and the external braid (EB). EB, with fibers arranged transversely to the IB, is placed laterally. Differently prepared TPAMs were tested for their effectiveness as actuators for robot drive and the PDMS/PET composite suitability was evaluated for applications in human gastrointestinal tract (chemical resistance, thermal characteristic). FT-IR spectra of the composite were compared for study PDMS impregnation process of PET satin and effect of immersion in selected solution. The composite shows outstanding biocompatibility and the muscles have competitive static load characteristics in comparison with other pneumatic artificial muscles (PAM). These results lead to believe, that in the near future painless examination of the gastrointestinal tract using a secure robot will be possible.

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Antimicrobial materials properties based on ion-exchange 4A zeolite derivatives

oral infections by two susceptibility tests. Int. J. Antimicrob. Agents. 27(6), 513–517. http://dx.doi.org/10.1016/j.ijantimicag.2006.01.008 14. Kalinowska, M., Piekut, J., Bruss, A., Follet, C., Sienkiewicz-Gromiuk, J., Świsłocka, R., Rzączyńska, Z. & Lewandowski, W. (2014). Spectroscopic (FT-IR, FT-Raman, 1H, 13C NMR, UV/VIS), thermogravimetric and antimicrobial studies of Ca(II), Mn(II), Cu(II), Zn(II) and Cd(II) complexes of ferulic acid. Spectrochim. Acta. A Mol. Biomol. Spectrosc. 122, 631–638. http://dx.doi.org/10.1016/j.saa.2013.11.089 15

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On the characteristic and stability of iron diet supplements

using FTIR spectroscopy. J. Mol. Struct . 1130, 33–37. DOI: https://doi.org/10.1016/j.molstruc.2016.10.019 . 29. Chylińska, M., Szymańska-Chargot, M. & Zdunek, A. (2016). FT-IR and FT-Raman characterization of non-cellulosic polysaccharides fractions isolated from plant cell wall. Carbohydr. Polym. 154, 48–54. DOI: 10.1016/j.carbpol.2016.07.121. 30. Romano, N., Santos, M., Mobili, P., Vega, R. & Gómez-Zavaglia, A. (2016). Effect of sucrose concentration on the composition of enzymatically synthesized short-chain fructo-oligosaccharides as determined by

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Comparison of photoacoustic, diffuse reflectance, attenuated total reflectance and transmission infrared spectroscopy for the study of biochars

reflectance and transmission infrared spectroscopy for the study of carbon fibers. Fuel 74, 543-548. DOI: 10.1016/0016-2361(95)98357-K. 4. Gomez-Serrano, V., Piriz-Almeida, F., Duran-Valle, C.J. &Pastor-Villegas, J. (1999) Formation of oxygen structures by air activation. A study by FT-IR spectroscopy. Carbon 37, 1517-1528. DOI: 10.1016/S0008-6223(99)00025-1. 5. Yarwood, J. (1993). Fourier Transform Infrared Reflection Spectroscopy for surface analysis Analytical Proceedings, Surface Analysis 30, 13-18. 6. Kim, K.H., Kim, J

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The effect of kaolin modification of silane coupling agents on the properties of the polyethylene composites

, L., Krysztafkiewicz, A. & Maik, M., (1980). Przegląd reakcji grup silanolowych na powierzchni krzemionki , Chemik 33, 202-206. Domka, L., (1983). Kaoliny jako napełniacze mieszanek gumowych , Chemik 36, 65-69. Kozłowska, A., (2005). Diagenetyczny kaolinit w piaskowcach karbonu rowu lubelskiego , Przegląd Geologiczny vol. 53, nr 3, 258-259. Office Newspaper UE L346/23. Madejova, J. (2003). FT-IR techniques in claus clay mineral studies, Vibr. Spec. 31

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Synthesis of a novel environmental friendly plasticizer based on tung oil fatty acid for poly (vinyl chloride) blends

: 10.1002/vnl.10261. 30. Soudais, Y., Moga, L., Blazek, J. & Lemort, F. (2007). Coupled DTA-TGA-FT-IR investigation of pyrolytic decomposition of EVA, PVC and cellulose. J. Anal. Appl. Pyrolysis. 78(1):46–57. DOI: https://doi.org/10.1016/j.jaap.2006.04.005 . 31. Li, Y., Wang, C., Wang G. & Qu, Z. (2008). Application of the long-chain linear polyester in plastification of PVC. J. Wuhan Univ. Technol. 23(1), 100–104. DOI: 10.1007/S11595-006-1100-3. 32.Yin, B. & Hakkarainen, M. (2010). Oligomeric isosorbide esters as alternative renewable resource

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Sonochemical-assisted magnesium borate synthesis from different boron sources

.V., Rajendran, V., Jeyasubramanian, K., Suresh Kumar, N. & Abdel-Hameed, S.A.M. (2006). Ultrasonic investigation on nanocrystalline barium borate (BBO) glass ceramics. Synth. React. Inorg. Me. 36, 215-219. 35. Yilmaz, M.S., Kanturk Figen, A. & Piskin, S. (2012). Production of sodium metaborate tetrahydrate (NaB(OH)4·2H2O) using ultrasonic irradiation. Powder Technol. 215-216, 166-173. DOI: 10.1016/j.powtec.2011.09.043. 36. Yongzhong, J., Shiyang, G., Shuping, X. & Jun, L. (2000). FT-IR spectroscopy of supersaturated aqueous solutions of

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