1-20 OF 76 RESULTS FOR

Fischer-Tropsch type reactions

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
×Close Modal
Sort by
Journal Article
Journal: Elements
Published: 01 August 2014
Elements (2014) 10 (4): 291-296.
... . The Sabatier reaction (also known as “hydrogenation of CO 2 ”) and the Fischer-Tropsch reaction (with CO) are today cumulatively termed Fischer-Tropsch-type (FTT) reactions. In pioneering hypotheses, Thayer ( 1966 ) and Szatmari ( 1989 ) proposed that CO 2 hydrogenation could operate under geologic...
FIGURES | View All (5)
Journal Article
Published: 01 December 2013
Mineralogical Magazine (2013) 77 (8): 3163-3174.
... in serpentinites plays an important role in the carbon speciation in the oceanic crust and exposed mantle, in which hydrocarbons (mainly CH 4 ) of abiogenic origin (via Fischer-Tropsch-type reaction) and occasionally graphite particles are detected. Can nanodiamonds nucleate and grow in serpentinite-hosted...
FIGURES | View All (4)
Journal Article
Published: 01 August 2014
Mineralogical Magazine (2014) 78 (4): 919-940.
... from serpentinization of olivine and clinopyroxene and a Fischer-Tropsch-type reaction. The presence of hydrocarbons has serious implications for the sepiolite habit, as the organic wrap interacts with the fibril's surface reducing the amount of adsorbed water and favouring the fragmentation of thicker...
FIGURES | View All (10)
Journal Article
Published: 01 February 2012
Clays and Clay Minerals (2012) 60 (1): 18-31.
... of organic compounds detected previously in some metasomatized Hyblean gabbroic xenoliths suggest a possible abiogenic origin of hydrocarbons via a Fischer-Tropsch-type reaction. The S. Demetrio clay diapir was emplaced at shallow crustal levels in the Late Miocene as a consequence of the interaction...
FIGURES | View All (14)
Journal Article
Journal: AAPG Bulletin
Published: 01 August 1989
AAPG Bulletin (1989) 73 (8): 989-998.
... , 1986b ) that it may take place on a large scale during lithospheric plate interaction The basic reaction in Fischer-Tropsch synthesis ( Anderson, 1984 ; Roper, 1983 ) is the highly exothermic hydrogenation of carbon monoxide and the slightly endothermic hydrogenation of carbon dioxide...
FIGURES | View All (8)
Journal Article
Journal: AAPG Bulletin
Published: 01 May 2008
AAPG Bulletin (2008) 92 (5): 549-556.
... and methane discharge areas including Rainbow (36°14′N), Lucky Strike (37°17′N), Logatchev (14°45′N), and Menez Gwen (37°50′N). Most of this methane was derived through serpentization of ultramafic rocks producing hydrogen, which in turn reacts with CO or CO 2 in a Fischer-Tropsch-type reaction to yield...
Series: Geological Society, London, Special Publications
Published: 01 January 2003
DOI: 10.1144/GSL.SP.2003.214.01.10
EISBN: 9781862394629
... or no hydrocarbons in the samples. The majority of Sokli samples contain abundant sulphides which may have inhibited any Fischer-Tropsch type reaction from occurring. The extensive serpentinization (and phlogopitization) of the assemblage also suggests that large volumes of H 2 O infiltrated the complex, potentially...
FIGURES | View All (4)
Journal Article
Published: 01 December 1998
European Journal of Mineralogy (1998) 10 (6): 1167-1180.
... association of CH 4 inclusions with magnetite and late-stage hydrated phases suggests evolution of CH 4 during hydration within a reducing environment. This evolution involved subsolidus Fischer-Tropsch reactions of the type CO 2 +4H 2 -->CH 4 +2H 2 O, with the water-produced driving hydration reactions...
Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2005
DOI: 10.5382/SP.10.04
EISBN: 9781629490342
... to negative equilibrium temperatures. The reaction CO 2 + 4H 2 = CH 4 + 2H 2 O, mistakenly called the Fischer-Tropsch reaction by some geochemists, is unlikely to apply under redox and temperature conditions in the hydrothermal and magmatic environment. The only natural inorganic process in which...
FIGURES | View All (13)
Journal Article
Published: 02 April 2000
Canadian Journal of Earth Sciences (2000) 37 (2-3): 135-164.
... of the Shield. The depleted H may form by radiolysis of H 2 O and (or) by a Fischer-Tropsch type process. The hypersaline brine end-member was shifted to the left of the meteoric water line by exchange with D-depleted H. Fig. 2. Composite interpretation of seismic sections across the Opatica plutonic belt...
FIGURES | View All (15)
Journal Article
Published: 01 May 2006
American Mineralogist (2006) 91 (5-6): 784-789.
... suggest that the carbonaceous material is similar in structure to microfossil kerogen, implying the microbe-like features within Apex chert are also microfossils. However, this kerogen-like material may also be produced abiotically via Fischer-Tropsch-type (FTT) synthesis reactions in an ancient...
FIGURES
Journal Article
Published: 01 April 2019
Mineralogical Magazine (2019) 83 (2): 209-222.
... Society of Great Britain and Ireland 2018 2018 Mineralogical Society of Great Britain and Ireland sepiolite aliphatic hydrocarbons FischerTropsch-type reaction hydrothermal system noxiousness hazard Sepiolite [ideal formula: Mg 8 Si 12 O 30 (OH) 4 (OH 2 ) 4 ·8H 2 O] is a naturally...
FIGURES | View All (9)
Journal Article
Journal: Clay Minerals
Published: 01 September 2012
Clay Minerals (2012) 47 (3): 285-302.
... geomaterials catalysis degradation decomposition of contaminants in soils wastewaters Iron (hydr)oxides have been widely used as catalysts in various heterogeneous catalytic processes such as Haber-Bosch to produce ammonia ( Bogdanov et al. , 1990 ; Holme, 1997 ), the Fischer-Tropsch hydrocarbon...
FIGURES | View All (6)
Image
Parallels between the abiotic reduction of CO 2  to CH 4  and the metabolic...
in > Elements
Published: 01 April 2013
F igure 4 Parallels between the abiotic reduction of CO 2 to CH 4 and the metabolic pathways used by methanogenic archaea to extract energy and fix carbon into biomass. The abiotic pathway shows the sequential reduction of carbon on the surface of a catalyst as it occurs in Fischer-Tropsch
Journal Article
Journal: Economic Geology
Published: 01 August 2016
Economic Geology (2016) 111 (5): 1241-1276.
... ). The original igneous porphyritic textures are preserved in this alteration type, which is manifested by a distinctive alteration halo around the pegmatite spine. The reaction of arfvedsonite to aegirine leads to the release of Si, Na, and Fe, as follows: (2) ( Arf )   Na 3 Fe 4 2...
FIGURES | View All (22)
Journal Article
Journal: Elements
Published: 01 June 2005
Elements (2005) 1 (3): 139-143.
... ), has the capacity to generate copious quantities of hydrogen as a by-product ( Berndt et al. 1996 ). The reactions most likely responsible for these natural hydrocarbon syntheses are Fischer-Tropsch Type reactions (FTT), by which carbon atoms in CO groups sequentially bind to a catalytic surface...
FIGURES | View All (5)
Journal Article
Published: 01 October 2013
American Mineralogist (2013) 98 (10): 1738-1744.
... of metabolic energy for deep chemoautotrophic ecosystems and could also act as an industrial-scale energy source. In the presence of CO 2 , the availability of molecular hydrogen also controls the balance between CO 2 -mineralization and abiotic CO 2 -reduction, including Fischer Tropsch-type reactions...
FIGURES | View All (4)
Journal Article
Journal: Geology
Published: 01 November 2005
Geology (2005) 33 (11): 913-916.
... . Pinnavaia , T.J. , 1983 , Intercalated clay catalysts : Science , v. 220 p. 365 - 371 . Rushdi , A.I. , and Simoneit , B.R.T. , 2001 , Lipid formation by aqueous Fischer-Tropsch-type synthesis over a temperature range of 100 to 400 °C : Origins of Life and Evolution...
FIGURES
Journal Article
Journal: Geology
Published: 01 December 2013
Geology (2013) 41 (12): 1207-1210.
.... However, where CH 4 and C 2 H 6 are present, the C 1 /C 2 values range from 2.6 to 25.5, which is indicative of thermogenic origin. Abiogenic Fischer-Tropsch synthesis can produce CH 4 and other organic compounds by reactions involving CO and H 2 with catalysts. It has been advocated...
FIGURES
Journal Article
Journal: Geology
Published: 19 October 2017
Geology (2017) 45 (12): 1135-1138.
... et al., 2012 ). This suggests that Fischer-Tropschtype synthesis may occur to produce CH 4 abiotically. Lin et al. (2012) indicated that some of the CH 4 in basement fluids at Juan de Fuca Ridge (offshore northwestern North America) may be produced abiotically. The δ 13 C-CH 4 values...
FIGURES