Author
Listed:
- Zhu, Jie
- Niu, Shengli
- Abulizi, Abulikemu
- Xu, Yang
- Li, Xin
- Zheng, Yue
- Wei, Yujie
- Zhang, Yujiao
- Hao, Yanan
- Liu, Sitong
- Liu, Jisen
- Yang, Zihao
Abstract
In this research, a series of Ca-Zr/clinoptilolite catalysts, which are activated at the different calcination temperatures, are synthesized by the simple co-precipitation method and then applied in catalyzing transesterification of the high-acid-value feedstock oil with methanol to produce biodiesel. The acidic and basic sites in the catalyst originate from the synergistic effect of Zr and Ca. The excellent pore structure of the Ca-Zr/clinoptilolite catalyst is conducive to the rapid diffusion of reactant molecules such as triglycerides within the catalyst, thereby enhancing the transesterification efficiency. The Ca-Zr/clinoptilolite catalyst activated at 850 °C is preferred as the final catalyst due to the highest catalytic activity in transesterification. The response surface methodology (RSM) with the central composition designs (CCD) is employed to optimize the catalyzed transesterification parameters of the methanol to oil molar ratio, catalyst amount, and reaction temperature at the fixed reaction duration of 180 min. At the methanol to oil molar ratio of 16.9, catalyst amount of 7 wt%, and reaction temperature of 131 °C, the highest biodiesel yield of 97.43 % is achieved. On the whole, the Ca-Zr/clinoptilolite catalyst exhibits the great acid resistance capability and stability in catalyzing transesterification of the high-acid-value feedstock oil for biodiesel production.
Suggested Citation
Zhu, Jie & Niu, Shengli & Abulizi, Abulikemu & Xu, Yang & Li, Xin & Zheng, Yue & Wei, Yujie & Zhang, Yujiao & Hao, Yanan & Liu, Sitong & Liu, Jisen & Yang, Zihao, 2025.
"Ca-Zr modified clinoptilolite catalyst as a novel bifunctional catalyst for biodiesel production from badly acidified feedstock oil and process optimization,"
Renewable Energy, Elsevier, vol. 249(C).
Handle:
RePEc:eee:renene:v:249:y:2025:i:c:s0960148125009620
DOI: 10.1016/j.renene.2025.123300
Download full text from publisher
As the access to this document is restricted, you may want to
for a different version of it.
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:249:y:2025:i:c:s0960148125009620. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.