carbon fibre, surface modification, sulfogroups, dehydratation of isopropanol.

How to Cite

Grishchenko, L., Bezugla, T., Zaderko, A., Vakaliuk, A., Mischanchuk , O., Novychenko, N., Cheremenko , A., & Diyuk, V. (2019). CATALYSTS OF ACID-BASE PROCESS ON THE BASIS OF THE MODIFIED CARBON FIBER. Ukrainian Chemistry Journal, 85(7), 38-48.


The functionalization of the carbon fiber based on polyacrylonitrile with sulfur-containing groups of high acidity was carried out in order to obtain the acid-base processes catalysts. Fibers were treated with sulfur vapors in the temperature range of 400-800°C, followed by surface oxidation with 30% hydrogen peroxide solution. Modified samples were investigated by chemical analysis, thermo-programmed desorption with mass spectrometric registration of products, IR spectroscopy and thermogravimetry. It is shown that the obtained materials contain SO3H-functional groups and oxygen-containing groups (carboxyl, lactone, phenolic, etc.) formed in the surface layer during the oxidation of the fiber surface. The chemical analysis showed that the concentration of sulfur in the samples of the modified fiber is 1.6-6.5 mmol/g. The synthesized samples have a satisfactory thermal stability.

The synthesized catalysts were investigated in the model reaction - gas phase dehydration of isopropyl alcohol. It was found that obtained SO3H-containing carbon fibers were catalytically active and had high propylene selectivity. For all the samples obtained there is a complete conversion of alcohol into propylene. The activity of modified carbon fiber samples in the reaction indicated is a fairly high, temperatures of the total conversion of alcohol into propylene are in the range of 160-190°C. During the study of synthesized catalysts in  several cycles of catalysis it have been shown that within repeated use (3 cycles) of all modified fiber samples, the yield of propylene does not decrease, the activity remains stable - the temperature of the dehydration reaction remains unchanged or increases  insignificantly (by 5-10ºС). The temperatures of complete conversion of isopropyl alcohol in propylene for synthesized catalysts are lower than the temperatures of destruction maxima of surface sulfogroups. Thus, modified carbon fibers can be used as low-temperature catalysts of acid-base processes, in particular dehydration of alcohols.


. Knaggs E.A., Nepras M.J., Othmer K. Encyclopedia of Chemical Technology. (Hoboken: Wiley, 2014).

Rodriguez-Reinoso F. The role of carbon materials in heterogeneous catalysis. Carbon. 1998. 36: 159–175.

Carrasco-Marin F., Mueden A., Moreno-Castilla C. Surface-treated activated carbons as catalysts for the dehydration and dehydrogenation reactions of ethanol. J. Phys. Chem. B. 1998. 102: 9239–9244.

Kang S., Ye J., Chang J. Recent advances in carbon-based sulfonated catalyst: preparation and application. Int. Rev. Chem. Eng. 2013. 5: 133–143.

Georgakilas V., Otyepka M., Bourlinos A.B., Chandra B., Kim N., Kemp K.C., Hobza P., Zboril R., Kim K.S. Functionalization of graphene: covalent and non-covalent approaches, derivatives and applications. Chem. Rev. 2011. 112(11): 6156–6214.

Figueiredo J.L., Pereira M.F.R., Freitas M.M.A., Orfao J.J.M. Modification of the surface chemistry of activated carbons. Carbon. 1999. 37: 1379–1389.

Strelko V., Malik D.J., Streat M. Characterisation of the surface of oxidized carbon adsorbents. Carbon. 2002. 40: 95–104.

Geng L., Wang Y., Yu G., Zhu Y. Efficient carbon-based solid acid catalysts fort he esterification of oleic acid. Catal.-Commun. 2011. 13: 26–30.

Pang Q., Wang L.Q., Yang H., Jia L.S., Pan X.W., Qiu C.C. Cellulose-derived carbon bearing –Cl and –SO3H groups as a highly selective catalyst for the hydrolysis of cellulose to glucose. RSC Adv. 2014. 4: 41212–41218.

Ferro-Garcia M.A., Utrera-Hidalgo E., Rivera-Utrilla J., Moreno-Castilla C., joly J.P. Regeneration of activated carcon exhausted with chlorophenols. Carbon. 1993. 31(6): 856–863.

Park S.-J. Carbon Fibers. (Dordrecht: Springer, 2015).

Li D., Ma X. Preparation and characterization of activated carbon fibers from liquefied wood. Cellulos. 2013. 20 (4). 1649–1656.

Zverev M.P. Fibre chemisorbents – material for environmental protection. A review. Fibre Chemistry. 2002. 34(6): 456–465.

Grishchenko L.M., Vakalyuk A.V., Bezugla T.M., Beda O.A., Mischanchuk OV, Dyuk V.Ye. Functionalization of carbon fiber based on polyacrylonitrile with S-containing groups. Ukr. Chem J. 2017. 83 (3): 37–42. [in Ukrainian].

ISO 5931:2000.

Bezugla T.M., Grishchenko L.M., Vakaliuk A.V., Diyuk V.E., Mischanchuk O.V., and Lisnyak V.V. Covalent bonding of sulfogroups to activated carbon fibers: The role of bromine plasma pretreatment // Mol Cryst Liq Cryst. 2018. 661(1): 58–67.

Diyuk V.E., Zaderko A.N., Grishchenko L.M., Yatsymyrskiy A.V., Lisnyak V.V. Efficient carbon-based acid catalysts for the propan-2-ol dehydration. Catal.-Commun. 2012. 27: 33–37.

Puri B. R. Surface Complexes on Carbons. Chemistry and Physics of Carbon. (New York: Marcel Dekker, 1970).

Bansal R.C., Donnet J-B., Stoeckli F. Active carbon. (New York, Basel: Marcel Dekker, 1988).

Jiang Y., Li X., Cao Q., Mu X. Acidic functionalized, highly dispersed carbonaceous spheres: An effective solid acid for hydrolysis of polysaccharides. J Nanopart Res. 2011. 13: 463–469.

Rodán L., Santos I., Armenise S. The formation of a hydrothermal carbon coating on graphite microfiber felts for using as structured acid catalyst. Carbon. 2012. 50: 1363–1372.

Gao Z., Tang S., Cui X. Efficient mesoporous carbon-based solid catalyst for the esterification of oleic acid. Fuel. 2015. 140: 669–676.

Hasan Z., Jun J.W., Jhung S. Sulfonic acid-functionalized MIL-101(Cr): an efficient catalyst for esterification of oleic acid and vapor-phase dehydration of butanol. Chem. Eng. J. 2015. 278: 265–271.

Kim I., Kim J., Lee D. General Sulfonic acid functionalized deoxycellulose catalysts for glycerolacetylation to fuel additives. Appl. Catal. A: Gen. 2014. 482: 31–37.

Suleiman D., Elabd Y.A., Napadensky E. Thermogravimetric characterization of sulfonated poly(styrene-isobutylene-styrene) block copolymers: effects of processing conditions. Thermochim. Acta. 2005. 430: 149–154.

Li Q., Chen S., Zhuang L., Xu X. and Li H. Preparation of a sulfonsted activated carbon fiber catalyst with γ-irradiation-induced grafting method. J. Mater. Res. 2012. 27 (24): 3083–3089.

Aldana-Pérez A., Lartundo-Rojas L., Gуmez R., Niсo-Gуmez M.E. Sulfonic groups anchored on mesoporous carbon Starbons-300 and its use for the esterification of oleic acid. Fuel. 2012. 100: 128–138.

Singare P.U., Lokhande R.S., Madyal R.S. Thermal Degradation Studies of Some Strongly Acidic Cation Exchange Resins. OJPC. 2011. 1: 45–54.


Download data is not yet available.