Adsorption decolorization and composition analysis of high melting point Fischer–Tropsch waxes
Chenguang Jiang
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Search for more papers by this authorCorresponding Author
Shengzhen Zhang
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Correspondence
Shengzhen Zhang and Cuiqing Zhang, National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China.
Email: [email protected] and [email protected]
Search for more papers by this authorCorresponding Author
Cuiqing Zhang
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Correspondence
Shengzhen Zhang and Cuiqing Zhang, National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China.
Email: [email protected] and [email protected]
Search for more papers by this authorXiaofeng Li
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Search for more papers by this authorYi Guo
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Search for more papers by this authorChenguang Jiang
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Search for more papers by this authorCorresponding Author
Shengzhen Zhang
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Correspondence
Shengzhen Zhang and Cuiqing Zhang, National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China.
Email: [email protected] and [email protected]
Search for more papers by this authorCorresponding Author
Cuiqing Zhang
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Correspondence
Shengzhen Zhang and Cuiqing Zhang, National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China.
Email: [email protected] and [email protected]
Search for more papers by this authorXiaofeng Li
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Search for more papers by this authorYi Guo
National Institute of Clean-and-Low-Carbon Energy, Beijing, China
Search for more papers by this authorAbstract
The decolorization and quality improvement of the high melting point Fischer–Tropsch wax were carried out by the method of adsorption refining, and the activated clay was selected as adsorbent. The effects of adsorption decolorization temperature on the wax products were evaluated by testing the saybolt color number and whiteness value of the waxes. Meanwhile, the influence of adsorption decolorization temperature on the composition of waxes was investigated by gas chromatography (GC), inductively coupled plasma (ICP), thermogravimetry/differential thermogravimetry (TG/DTG), differential scanning calorimetry (DSC), thermogravimetric mass spectrometry (TG-MS), Fourier transform infrared (FTIR), nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), and X-ray fluorescence (XRF) characterizations of waxes and adsorbents activated clay before and after use. The results showed that the best adsorption decolorization temperature is 120°C, and the corresponding saybolt color number of decolorization waxes is +16. The reasons for the poor chromaticity of high melting point wax are not only the inorganic components mainly composed of residual ultrafine catalyst particles but also the organic components of unsaturated carbon–carbon double bonds and heteroatomic compounds containing oxygen, nitrogen, and sulfur. The oxidative deterioration of the unsaturated carbon–carbon double bond and hydrocarbons with low bond energy in waxes, as well as the oxidation of hydrocarbons containing oxygen and nitrogen heteroatoms, may be the main reasons for the yellowing of the wax products in the process of decolorization.
CONFLICTS OF INTEREST
There are no conflicts of interest to declare.
Supporting Information
| Filename | Description |
|---|---|
| apj2857-sup-0001-Supplmentary materials.docxWord 2007 document , 11.8 KB |
Table S1. Elemental analysis of 110# raw wax |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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