TY - JOUR

T1 - Preparation of a fiberglass-supported Ni-Si-Ti oxide catalyst for oxidation of hydrocarbons

T2 - effect of SiO2

AU - Brichkov, Anton S.

AU - Shamsutdinova, Anastasiya N.

AU - Khalipova, Olga S.

AU - Rogacheva, Anastasiya O.

AU - Larina, Tatyana V.

AU - Glazneva, Tatyana S.

AU - Cherepanova, Svetlana V.

AU - Paukshtis, Evgeny A.

AU - Buzaev, Alexander A.

AU - Kozik, Vladmir V.

AU - Chen, Yu Wen

PY - 2019/8/5

Y1 - 2019/8/5

N2 - BACKGROUND: Preparation of homogeneous oxide coatings on the surface of fiberglass is a difficult task due to hydrophobicity of the fiberglass support. NiO-TiO2 cannot coat the fiberglass surface homogeneously. In the present study, SiO2 was added in the NiO-TiO2. A sol–gel method was used to prepare Ni-Si-Ti sol and this was used to coat fiberglass and form a complex Ni-Si-Ti oxide system supported on its surface. The catalyst was tested for hydrocarbon oxidation reaction. RESULTS: The as-prepared material is a mixture of TiO2 in the anatase modification and SiO2 in the amorphous phase. UV-visible diffusion reflectance spectroscopy confirmed the presence of Ni2+ Oh cations in the film bulk. Introduction of silica to the sample ensured a uniform distribution of the NiTi oxide system on the fiberglass surface and its durable retention there at 600 °C. The Ni-Si-Ti mixed oxide supported on fiberglass demonstrated a higher catalytic activity in the oxidation of n-heptane, compared to NiTi oxide/fiberglass catalyst. It is stable even at 600 °C, the temperature at which the maximum n-heptane conversion of 93% was reached. CONCLUSION: Adding SiO2 in NiO-TiO2 can coat fiberglass homogeneously as SiO2 can coat hydrophobic surfaces such as fiberglass. This research provides a method with which to coat metal oxide catalyst on fiberglass that is very active and stable for oxidation of hydrocarbons even at high temparatures, compared to that without adding SiO2.

AB - BACKGROUND: Preparation of homogeneous oxide coatings on the surface of fiberglass is a difficult task due to hydrophobicity of the fiberglass support. NiO-TiO2 cannot coat the fiberglass surface homogeneously. In the present study, SiO2 was added in the NiO-TiO2. A sol–gel method was used to prepare Ni-Si-Ti sol and this was used to coat fiberglass and form a complex Ni-Si-Ti oxide system supported on its surface. The catalyst was tested for hydrocarbon oxidation reaction. RESULTS: The as-prepared material is a mixture of TiO2 in the anatase modification and SiO2 in the amorphous phase. UV-visible diffusion reflectance spectroscopy confirmed the presence of Ni2+ Oh cations in the film bulk. Introduction of silica to the sample ensured a uniform distribution of the NiTi oxide system on the fiberglass surface and its durable retention there at 600 °C. The Ni-Si-Ti mixed oxide supported on fiberglass demonstrated a higher catalytic activity in the oxidation of n-heptane, compared to NiTi oxide/fiberglass catalyst. It is stable even at 600 °C, the temperature at which the maximum n-heptane conversion of 93% was reached. CONCLUSION: Adding SiO2 in NiO-TiO2 can coat fiberglass homogeneously as SiO2 can coat hydrophobic surfaces such as fiberglass. This research provides a method with which to coat metal oxide catalyst on fiberglass that is very active and stable for oxidation of hydrocarbons even at high temparatures, compared to that without adding SiO2.

KW - fiberglass

KW - n-heptane oxidation

KW - nickel

KW - silica

KW - sol–gel synthesis

KW - titania

KW - sol-gel synthesis

KW - PERFORMANCE

KW - STABILITY

KW - PROPERTY

KW - CO

KW - CH4

KW - COMPOSITE FILMS

KW - FIBERS

KW - SILICA

KW - NEW-GENERATION

KW - MORPHOLOGY

UR - http://www.scopus.com/inward/record.url?scp=85071618455&partnerID=8YFLogxK

U2 - 10.1002/jctb.6167

DO - 10.1002/jctb.6167

M3 - Article

AN - SCOPUS:85071618455

VL - 94

SP - 3618

EP - 3624

JO - Journal of Chemical Technology and Biotechnology

JF - Journal of Chemical Technology and Biotechnology

SN - 0268-2575

IS - 11

ER -