2021年12月27日 · The microcrystallite structure of coke is typically characterized by X-ray diffraction (XRD). The average size of coke crystallite can be calculated based on the XRD pattern. In addition, high-resolution transmission electron microscopy (TEM/HRTEM) can directly observe the lattice fringe of the coke matrix and determine the ordering degree of coke.

The results of the XRD analysis (Fig. 2c) highlighted the presence of mainly hematite and magnetite with residual amount of unburnt coke (amorphous halo at 25° 2θ) that partially graphitized ...

2021年2月9日 · Hydrotalcite derived Ni catalysts with a small amt. of oxide additive (CeO2, ZrO2, ZnO) as promoters are synthesized and characterized by different techniques, X-ray diffraction (XRD), X-ray fluorescence (XRF), N2 physisorption, H2 chemisorption, transmission electron microscopy (TEM), SEM and thermogravimetric anal. combined with mass ...

2019年8月27日 · Industrial needle-coke samples from different producers are investigated by X‑ray diffraction and scanning electron microscopy. Their structural parameters La and Lc are determined, and their microstructure is investigated.

2021年1月1日 · The micro-structure of needle cokes at different calcination temperature has been detailed characterized by X-ray diffraction (XRD), Raman spectrum, scanning electron microscope (SEM), and ...

Coke is the main most suitable component for the production of anode masses and baked anodes due to its availability in large volumes, chemical purity and ability to acquire electrical conductivity during heat treatment of coke. The properties of the anodes are largely determined by the properties of coke.

Abstract Three kinds of needle coke (numbered as Coke-N, Coke-H and Coke-P) from different sources were studied with X-ray diffraction (XRD), Raman spectrum and curve-fitting analysis. The graphitization degree, crystal structure types and crystal size (La and Lc) of these three needle cokes were calculated with XRD.

In this work, industrial samples of coke from two different manufacturers were studied using a complex of structural methods: phase and structural analysis by powder X-ray diffraction, analytical scanning electron microscopy and adsorption porosimetry.

Knowledge of internal structure of Pet coke is useful as it can find application in many engineering and high value applications such as catalyst carrier, adsorbent, and toxic material removal. The activities in Final Year Project 1 (FYP 1) involved a comprehensive literature review of the XRD pattern of an amorphous material.

Abstract Soft coal tar pitch (SCTP) with low QI content is the preferred raw material for preparing coal-based needle coke. The study on its structure changes in the cooking process is helpful to prepare high-quality needle coke.