The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
A Brønsted acidic ionic liquid as an efficient and environmentally benign catalyst for biodiesel synthesis from free fatty acids and alcohols
Abstract
Biodiesel could be synthesized using Brønsted acidic ionic liquid N-methyl-2-pyrrolidonium methyl sulfonate ([NMP][CH(3)SO(3)]) as a catalyst, specially with free long-chain fatty acids or their mixtures, as well as with low-molecular weight alcohols as substrates. This catalyst showed good catalytic and reusable performance under mild conditions and without any additional organic solvent. The ionic liquid could be reused eight times after the water in the ionic liquid was removed. The yields of fatty acid alkyl esters could reach between 93.6% and 95.3% after the esterifications were carried out at 70 degrees C for 8h. Therefore, an efficient and environmentally friendly catalyst was provided for the synthesis of biodiesel from low-cost feedstocks such as waste oils.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
H. Davis, J. (2004) · Chemistry Letters · doi:10.1246/cl.2004.1072 · Cited by 1,053
Cited by
Advancements in solid acid catalysts for biodiesel production
Su, F., & Guo, Y. (2014) · Green Chem. · doi:10.1039/c3gc42333f · Cited by 489
Ionic Liquids: Synthesis and Applications in Catalysis
Ratti, R. (2014) · Advances in Chemistry · doi:10.1155/2014/729842 · Cited by 286
Chen, S. S., Maneerung, T., Tsang, D. C. W., Ok, Y. S., & Wang, C.-H. (2017) · Chemical Engineering Journal · doi:10.1016/j.cej.2017.07.020 · Cited by 258
Ionic liquids for biofuel production: Opportunities and challenges
Liu, C.-Z., Wang, F., Stiles, A. R., & Guo, C. (2012) · Applied Energy · doi:10.1016/j.apenergy.2011.11.031 · Cited by 236
Yan, J., Zhao, Y., Li, K., Zhang, H., Fan, L., & Lu, Z. (2020) · Chemical Engineering and Processing - Process Intensification · doi:10.1016/j.cep.2020.107870 · Cited by 52
Metadata
- Authors
- Zhang, L., Xian, M., He, Y., Li, L., Yang, J., Yu, S., & Xu, X.
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2009-10
- Volume
- 100
- Issue
- 19
- Pages
- 4368-4373
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W1990982567
- Cited by
- 222
- References
- 1
- FWCI
- 9.51
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: A Brønsted acidic ionic liquid as an efficient and environmentally benign catalyst for biodiesel synthesis from free fatty acids and alcohols. https://app.cochat.ai/papers/10.1016/j.biortech.2009.04.012
- The paper
- Zhang, L., Xian, M., He, Y., Li, L., Yang, J., Yu, S., & Xu, X. (2009). A Brønsted acidic ionic liquid as an efficient and environmentally benign catalyst for biodiesel synthesis from free fatty acids and alcohols. Bioresource Technology. https://doi.org/10.1016/j.biortech.2009.04.012
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
