The DOI matches its Crossref record; 44 of the 45 references it cites were found in a registry or an index.
Lipid Formation by Aqueous Fischer-Tropsch-Type Synthesis over a Temperature Range of 100 to 400 °C
Open accessAbstract
The formation of lipid compounds during an aqueous Fischer-Tropsch-type reaction was studied with solutions of oxalic acid as the carbon and hydrogen source. The reactions were conducted in stainless steel vessels by heating the oxalic acid solution at discrete temperatures from 100 to 400 degrees C, at intervals of 50 degrees C for two days each. The maximum lipid yield, especially for oxygenated compounds, is in the window of 150-250 degrees C. At a temperature of 100 degrees C only a trace amount of lipids was detected. At temperatures above 150 degrees C the lipid components ranged from C12 to > C33 and included n-alkanols, n-alkanoic acids, n-alkyl formates, n-alkanals, n-alkanones, n-alkanes, and n-alkenes, all with essentially no carbon number preference. The n-alkanes increased in concentration over the oxygenated compounds at temperatures of 200 degrees C and above, with a slight reduction in their carbon number ranges due to cracking. It was also noted that the n-alkanoic acids increased while n-alkanols decreased with increasing temperature above 200 degrees C. At temperatures above 300 degrees C synthesis competes with cracking and reforming reactions. At 400 degrees C significant cracking was observed and polynuclear aromatic hydrocarbons and their alkylated homologs were detected. The results of this work suggest that the formation of lipid compounds by aqueous FTT reactions proceeds by insertion of a CO group at the terminal end of a carboxylic acid functionality to form n-oxoalkanoic acids, followed by reduction to n-alkanoic acids, to n-alkanals, then to n-alkanols. The n-alkenes are intermediate homologs for n-alkan-2-ones and n-alkanes. This proposed mechanism for aqueous FTT synthesis differs from the surface-catalyzed stepwise FT process (i.e., gaseous) of polymerization of methylene reported in the literature.
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.
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“Remarkably, when the temperature exceeded 150 °C the oxalic acid decomposed into carbon monoxide and water which then polymerized into hydrocarbon derivatives ranging from 12 to 33 carbons in length.”
From The Role of Lipid Membranes in Life’s Origin (2017) · cites this paper as [60]
Experimental — accuracy not yet measuredThe source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“The best studied pathways involve Fischer-Tropsch-type chemistry, in which carbon monoxide and hydrogen react under high temperature and pressure on the surface of transition metal minerals to generate terminally oxygenated, saturated linear chains (Rushdi and Simoneit 2001).”
From Protocells and RNA Self-Replication (2018) · cites this paper as Rushdi and Simoneit 2001
Experimental — accuracy not yet measuredThe cited source says what the claim attributes to it.
In the citing paper
“It seems unlikely that such an iron-catalyzed reaction could occur in the prebiotic conditions, but McCollom et al. [59] and Rushdi and Simoneit [60] have shown that a series of carboxylic acids and alcohols are synthesized when formic or oxalic acid solutions are heated under pressure and temperature regimes characteristic of hydrothermal conditions associated with volcanism.”
From The Role of Lipid Membranes in Life’s Origin (2017) · cites this paper as [60]
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
Lipid synthesis under hydrothermal conditions by Fischer-Tropsch-type reactions
McCollom, T. M., Ritter, G., & Simoneit, B. R. T. (1999) · Origins of life and evolution of the biosphere · doi:10.1023/a:1006592502746 · Cited by 475
Self-citationMechanism of the Fischer-Tropsch reaction. The chain propagation step
Brady, R. C., & Pettit, R. (1981) · Journal of the American Chemical Society · doi:10.1021/ja00395a081 · Cited by 402
Origins of methane in hydrothermal systems
Welhan, J. A. (1988) · Chemical Geology · doi:10.1016/0009-2541(88)90114-3 · Cited by 374
Methane-hydrogen gas seeps, Zambales Ophiolite, Philippines: Deep or shallow origin?
Abrajano, T. A., Sturchio, N. C., Böhlke, J. K., Lyon, G. L., Poreda, R. J., & Stevens, C. M. (1988) · Chemical Geology · doi:10.1016/0009-2541(88)90116-7 · Cited by 348
Submarine hot springs and the origin of life
Miller, S. L., & Bada, J. L. (1988) · Nature · doi:10.1038/334609a0 · Cited by 338
Geochemical constraints on the origin of organic compounds in hydrothermal systems
Shock, E. L. (1990) · Origins of life and evolution of the biosphere · doi:10.1007/bf01808115 · Cited by 299
Masters, C. (1979) · Advances in organometallic chemistry · doi:10.1016/s0065-3055(08)60321-4 · Cited by 287
Abiogenic methanogenesis in crystalline rocks
Lollar, B. S., Frape, S. K., Weise, S. M., Fritz, P., Macko, S. A., & Welhan, J. A. (1993) · Geochimica et Cosmochimica Acta · doi:10.1016/0016-7037(93)90610-9 · Cited by 281
Hydrothermal methane venting between 12°N and 26°N along the Mid‐Atlantic Ridge
Charlou, J. L., & Donval, J. (1993) · Journal of Geophysical Research Atmospheres · doi:10.1029/92jb02047 · Cited by 205
Giggenbach, W. F. (1997) · Geochimica et Cosmochimica Acta · doi:10.1016/s0016-7037(97)00171-3 · Cited by 185
Research works printed but not linked: 3
- Fischer, F.: 1935, Die Synthese der Treibstoffe (Kogasin) und Schmieröle aus Kohlenoxyd und Wasserstoff bei gewöhnlichem Druck, Brennstoff-Chemie 16, 1–11.
- Markhinin, E. K.: 1980, Volcanoes and life, Problems in Biovolcanology, Mycil, Moscow, 196 pp.
- Palmer, D. A., Weselowski, D. J. and Bell, J. L. S.: 1993, EMF Measurements of Oxalic and Formic Acid Decomposition Kinetics and Interaction of Acetate with Aluminum (III) to High Temperatures, EOS 74(16), 327–328.
Cited by
Sorted by citations
Peters, K. E., Walters, C. C., & Moldowan, J. M. (2004) · Cambridge University Press eBooks · doi:10.1017/cbo9780511524868 · Cited by 2,400
Peterson, A. A., Vogel, F., Lachance, R. P., Fröling, M., Antal, Jr., & Tester, J. W. (2008) · Energy & Environmental Science · doi:10.1039/b810100k · Cited by 2,132
Prebiotic Systems Chemistry: New Perspectives for the Origins of Life
Ruiz-Mirazo, K., Briones, C., & de la Escosura, A. (2014) · Chemical Reviews · doi:10.1021/cr2004844 · Cited by 930
Experimental Models of Primitive Cellular Compartments: Encapsulation, Growth, and Division
Hanczyc, M. M., Fujikawa, S. M., & Szostak, J. W. (2003) · Science · doi:10.1126/science.1089904 · Cited by 848
Abiotic Synthesis of Organic Compounds in Deep-Sea Hydrothermal Environments
McCollom, T. M., & Seewald, J. S. (2007) · Chemical Reviews · doi:10.1021/cr0503660 · Cited by 588
Metadata
- Authors
- Rushdi, A. I., & Simoneit, B. R. T.
- Affiliations
- Oregon State University (US)
- ORCID
- Rushdi, Ahmed I.
- Venue
- Origins of life and evolution of the biosphere
- Published
- 2001-02
- Volume
- 31
- Issue
- 1-2
- Pages
- 103-118
- ISSN
- 0169-6149 (ISSN-L)
- 1573-0875
- OpenAlex
- W422539398
- Cited by
- 274
- References
- 45
- Citations by year
- 2026: 11 · 2025: 10 · 2024: 5 · 2023: 12 · 2022: 16 · 2021: 12 · 2020: 11 · 2019: 11 · 2018: 14 · 2017: 16 · 2016: 6 · 2015: 7 · 2014: 11 · 2013: 6 · 2012: 14
- FWCI
- 9.58
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Origins of Life and Evolution of Biospheres (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Aeronautics and Space Administration
- Topics
- Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
- Physical Sciences › Energy › Fuel Technology › Thermochemical Biomass Conversion Processes
- Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Subcritical and Supercritical Water Processes
- Keywords
- oxalic acid, n-alkanoic acids, n-alkanols, n-alkanes, reaction temperature dependence, polycyclic aromatic hydrocarbons, prebiotic chemistry, origin of life
- MeSH terms
- Origin of Life, Alkanes, Hot Temperature, Lipids, Water, Evolution, Chemical, Oxalic Acid
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