Abstract

The reduction processes of the Fe/g-Al2O3 catalytic system by hydrogen were studied by Mössbauer spectroscopy and temperature programmed reduction (TPR) in the temperature range 293-773K. It was found that in the initial state, the system contains at least two paramagnetic forms of Fe3+ with close values of isomeric shifts and various quadrupole cleavages. In an atmosphere of the H2 iron in the system is reduced to the Fe2+ state in the range 573-773K, which is also in two forms. It was shown by the TPR method that hydrogen is adsorbed on the initial g-Al2O3 oxide with chromatographic maxima at 458 and 673K. For the Fe/g-Al2O3 system, the chromatographic maxima of hydrogen adsorption shift by 478 and 583K, and starting from ~ 630K, a desorption process is observed with a maximum at 703K.

References

  • Asif M, Mohd I (2019) Synthetic methods and pharmacological potential of some cinnamic acid analogues particularly against convulsions. Progress in Chemical and Biochemical Research 2(4): 192-210.
  • Boreskov GK (1986) Geterogennyiy kataliz. Izdatelstvo: Nauka, 305s. (in Russian)
  • Brodskiy AR, Grigor’eva VP, Komashko LV, Nurmakanov YY, Chanysheva IS, Shapovalov AA, Shlygina IA, Yaskevich VI (2018) Vzaimodeistvie kataliticheskoi sistemy Fe/γ-Al2O3 s molekulami-zondami. I. Issledovanie γ-Al2O3 i ishodnoy sistemy Fe/γ-Al2O3. Izvestiya NAN RK, Ser. him. i tehn 6: 109-119. (in Russian)
  • Brodskiy AR, Grigor’eva VP, Komashko LV, Nurmakanov YY, Chanysheva IS, Shapovalov AA, Shlygina IA, Yaskevich VI (2018) Vzaimodeistvie kataliticheskoi sistemy Fe/γ-Al2O3 s molekulami-zondami. II. Issledovanie nositelya γ-Al2O3 i sistemy Fe/γ-Al2O3 posle vzaimodeystviya s vodorodom i ammiakom. Izvestiya NAN RK, ser. him. i tehn 6: 120-129. (in Russian)
  • Brodskiy AR, Yaskevich VI (2020) Issledovanie kataliticheskoi sistemy Fe/γ-Al2O3 pri varirovanii atmosfery i temperatury. Kristallohimiya. (in press). (in Russian)
  • Brodskiy AR, Yaskevich VI, Khussain BKh (2019) Issledovanie vzaimodeistviya kataliticheskoi sistemy Fe/-Al2O3 s ammiakom v temperaturnom intervale 293 – 773К. Eurasian Journal of Biosciences. (in press) (in Russian)
  • Brooks JS, Thorpe S (1989) A Method for the Study of the Surface Corrosion Beneath Protective Layers. Hyperfine Interaction 47: 159-178.
  • Buhtiyarova GA, Martyanov ON, Yakushkin SS, Shuvaeva MA, Bayukov OA (2010) Fizika tverdogo tela, T.52, vyp 4: 771-781. (in Russian)
  • Hadzhiev SN, Lyadov AS, Krylova MV (2011) Sintez Fishera-Tropsha v trehfaznoy sisteme s nanorazmernymi chastitsami zheleznogo katalizatora. Neftehimiya.. t.51 1: 25-32. (in Russian)
  • Hajinezhad SAH, Amani AM, Mojtaba S (2019) Investigation the Antioxidant, Antibacterial and Insecticidal Activities of Cuscuta epithymum and Pyrethrum roseum Plants using Polydimethylsiloxane (CAR/PDMS). Journal of Environmental Treatment Techniques, 7(3): 234-244.
  • Hatmullina DD (2014) Katalizatory riforminga. Molodoy uchenyi 1: 136-138. (in Russian)
  • Krylov OV (2004) Geterogennyiy kataliz. M. IKTs «Akademkniga». 663 s. (in Russian)
  • Kupwade RV (2019) A Concise Review on Synthesis of Sulfoxides and Sulfones with Special Reference to Oxidation of Sulfides. Journal of Chemical Reviews, 1(2. pp. 78-170): 99-113.
  • Levchenkova TV, Platonova RI, Tarasov AE, Verma P, Ammosova LI, Nikitina AE, Olesov NP (2019) Socio-Pedagogical Significance of the” gto” Complex in the Formation of Healthy Population. Journal of Environmental Treatment Techniques 7(4): 572-575.
  • Mischenko SV, Tkachev AG (2008) Uglerodnyie nanomaterialy. Proizvodstvo, svoistva, primenenie. M.: Mashinostroenie 320 s. (in Russian)
  • Radchenko ED, Nefyodov BK, Aliev RR (1987) Promyshlennyie katalizatory gidrogenizatsionnyh protsessov neftepererabotki. M.: Himiya. 224 s. (in Russian)
  • Ramanovskiy BV (2014) Osnovyi kataliza. M.: Binom.. 175 s. (in Russian)
  • Sai P, Jong WB, Ki-Won J (2008) Fischer-Tropsch Synthesis by Carbon Dioxide Hydrogenation on Fe-Based Catalysts. Catalysis Surveys from Asia 12(3): 170-183.
  • Semenov VP (1985) Proizvodstvo ammiaka. M. Himiya. 368 s. (in Russian)
  • Sharypov VI, Kuznetsov PN, Krichko AA, Yulin MK, Boldyrev VV, Beregovtsova NG (1995) Patent RF 2036950 ot 09.06 (in Russian)
  • Shipilin AM, Zaharova IN, Bachurin VI (2014) Messbauerovskie issledovaniya chastits magnetita. Zh. Poverhnost, Rentgenovskie, Sinhrotronnyie i neytronnyie issledovaniya 6: 45-50. (in Russian)
  • Sibileva SV, Nefedova NV (2008) Razrabotka metoda prigotovleniya osazhdennyh zheleznyh katalizatorov sinteza ammiaka. Uspehi v himii i himicheskoy tehnologii: sb. nauchn. trudov. T.22, 10(90). M., RHTU im. D.I.Mendeleeva: 9-13. (in Russian)
  • Sibileva SV, Nefedova NV (2011) Mihaylichenko A.I. Poluchenie nanorazmernogo promotirovannogo magnetita – prekursora katalizatora sinteza ammiaka. Himicheskaya promyishlennost segodnya 6: 14-20. (in Russian)
  • Suzdalev IP (1979) Dinamichnyie effekty v gamma-rezonansnoy spektroskopii. M.: Atomizdat: 192 s. (in Russian)
  • Tsareva SYu, Zharikov EV, Anoshkin IV, Kovalenko AN (2003) Obrazovanie uglerodnyh nanotrubok pri kataliticheskom pirolize uglevodorodov s zhelezosoderzhaschim katalizatorom. Izvestiya vuzov. Elektronika 1: 20-24. (in Russian)
  • Vertheym G (1966) Effekt Messbauera (Printsipy i primeneniya). M.: Mir: 172 s. (in Russian)

License

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.