Glass fiber supports modified by layers of silica and carbon nanofibers

Abstract

Abstract:The new multi-layered composite was manufactured by deposition of the carbon nanofibers (CNF) at the surface of the glass-fiber fabric, which is pre-modified by application of additional external layers of NiO and porous silica. Carbonization of synthesized catalytic template was performed at 450 °C in propanebutane media at ambient pressure. CNF was deposited in amount of ~130% of initial template mass or 65 g per g of nickel, the specific surface area of the material is ~100 m 2 /g. The synthesized material has high mechanical strength, high hydrophobicity and strong bonding between CNF and glass-fiber support. The synthesis method is technologically simple, inexpensive and easily scalable. It is possible to manufacture such material in various solid shapes, using the flexibility of the primary glass-fiber support; in particular, it may be used for production of the mechanically self-sustainable catalytic cartridges with required shape and internal geometry using no additional structuring elements.

Decomposition of light hydrocarbons on a Ni-containing glass fiber catalyst

“…Previously [5], it was shown that a Ni-containing glass fiber-based catalyst is active in the decomposition of methane and light hydrocarbons at a temperature of 450 °C and atmospheric pressure. In this work, the effect of temperature and pressure on the conversion of a propanebutane mixture was studied.…”

“…The addition of silica was necessary to create an intermediate layer of a secondary porous substrate in order to improve the adhesion strength between the NiO surface and the glass fabric, while increasing the availability of gaseous reagents to the active compound NiO [15]. Using the method of transmission microscopy, it was determined that the distribution of particles is uniform, the average size of NiO particles was 15 nm [5].…”

“…A methane/PBM catalytic converter is installed directly at the CNG filling station to produce hydrogen in the required amount. Previously, the authors of [5] showed that a glass fiber-based nickel catalyst is active in the decomposition of methane and light hydrocarbons at a temperature of 450 °C and atmospheric pressure. PBM is a cheap, easily transportable raw material with safe storage, since it does not require high pressures.…”

Fibrous Material Structure Developments for Sustainable Heterogeneous Catalysis – An Overview

“…They are however usually less strong than woven fabrics because of how they are manufactured, but can be strengthened by bonding multiple layers. [153] Depending on the thickness of the structure, 2D fibrous sheets (Figure 8) or 3D sponge-like structures (Figure 9) are created, allowing for a diverse range of applications.…”

“…There is no weaving or manual construction involved, which makes nonwoven fabrics often even more cost‐effective and more quickly to manufacture than oriented fibrous structures. They are however usually less strong than woven fabrics because of how they are manufactured, but can be strengthened by bonding multiple layers [153] . Depending on the thickness of the structure, 2D fibrous sheets (Figure 8) or 3D sponge‐like structures (Figure 9) are created, allowing for a diverse range of applications.…”