Premium
Preparation of a fiberglass‐supported Ni‐Si‐Ti oxide catalyst for oxidation of hydrocarbons: effect of SiO 2
Author(s) -
Brichkov Anton S,
Shamsutdinova Anastasiya N,
Khalipova Olga S,
Rogacheva Anastasiya O,
Larina Tatyana V,
Glazneva Tatyana S,
Cherepanova Svetlana V,
Paukshtis Evgeny A,
Buzaev Alexander A,
Kozik Vladmir V,
Chen YuWen
Publication year - 2019
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.6167
Subject(s) - catalysis , materials science , non blocking i/o , oxide , anatase , chemical engineering , titanium oxide , mixed oxide , heptane , nickel oxide , photocatalysis , metallurgy , organic chemistry , chemistry , engineering
Abstract BACKGROUND Preparation of homogeneous oxide coatings on the surface of fiberglass is a difficult task due to hydrophobicity of the fiberglass support. NiO‐TiO 2 cannot coat the fiberglass surface homogeneously. In the present study, SiO 2 was added in the NiO‐TiO 2 . 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 TiO 2 in the anatase modification and SiO 2 in the amorphous phase. UV‐visible diffusion reflectance spectroscopy confirmed the presence of Ni 2+ Oh cations in the film bulk. Introduction of silica to the sample ensured a uniform distribution of the NiTi 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 NiTi 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 SiO 2 in NiO‐TiO 2 can coat fiberglass homogeneously as SiO 2 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 SiO 2 . © 2019 Society of Chemical Industry