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Download or read book Technology Development for Iron Fischer-Tropsch Catalysis. Quarterly Technical Progress Report No. 3, April 1, 1995-June 30, 1995 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Precipitated Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report, April 1, 1995-June 30, 1995 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (66 download)
Download or read book Da bei xin zhou xiang jie written by and published by . This book was released on 1981 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 39 pages
Book Rating : 4.:/5 (683 download)
Download or read book Technology Development for Iron Fischer-Tropsch Catalysis. Quarterly Technical Progress Report No. 5, October 1, 1995--December 31, 1995 written by and published by . This book was released on 1996 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research project is to develop the technology for the production of physically robust iron-based Fischer-Tropsch catalysts that have suitable activity, selectivity and stability to be used in the slurry phase synthesis reactor development. The catalysts that are developed shall be suitable for testing in the Advanced Fuels Development Facility at LaPorte, Texas, to produce either low- or high-alpha product distributions. Previous work by the offeror has produced a catalyst formulation that is 1.5 times as active as the ''standard-catalyst'' developed by German workers for slurry phase synthesis. The proposed work will optimize the catalyst composition and pretreatment operation for this low-alpha catalyst. In parallel, work will be conducted to design a high-alpha iron catalyst this is suitable for slurry phase synthesis. Studies will be conducted to define the chemical phases present at various stages of the pretreatment and synthesis stages and to define the course of these changes. The oxidation/reduction cycles that are anticipated to occur in large, commercial reactors will be studied at the laboratory scale. Catalyst performance will be determined for catalysts synthesized in this program for activity, selectivity and aging characteristics. The research is divided into four major topical areas: (a) catalyst preparation and characterization, (b) product characterization, (c) reactor operations, and (d) data assessment. Accomplishments to date are described.
Download or read book Massachusetts Under the Constitution written by and published by . This book was released on 1780 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Precipitated Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report, 1 January 1995-31 March 1995 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Precipitated Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report for the Period 1 October 1995 - 31 December 1995 written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 35 pages
Book Rating : 4.:/5 (684 download)
Download or read book Technology Development for Iron Fischer-Tropsch Catalysis. Quarterly Technical Progress Report No. 6, January 1, 1996--March 31, 1996 written by and published by . This book was released on 1996 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research project is to develop the technology for the production of physically robust iron-based Fischer-Tropsch catalysts that have suitable activity, selectivity and stability to be used in the slurry phase synthesis reactor development. The catalysts that are developed shall be suitable for testing in the Advanced Fuels Development Facility at LaPorte, Texas, to produce either low- or high-alpha product distributions. Previous work by the offeror has produced a catalyst formulation that is 1.5 times as active as the ''standard-catalyst'' developed by German workers for slurry phase synthesis. The proposed work will optimize the catalyst composition and pretreatment operation for this low-alpha catalyst. In parallel, work will be conducted to design a high-alpha iron catalyst that is suitable for slurry phase synthesis. Studies will be conducted to define the chemical phases present at various stages of the pretreatment and synthesis stages and to define the course of these changes. The oxidation/reduction cycles that are anticipated to occur in large, commercial reactors will be studied at the laboratory scale. Catalyst performance will be determined for catalysts synthesized in this program for activity, selectivity and aging characteristics. The research is divided into four major topical areas: (a) catalyst preparation and characterization, (b) product characterization, (c) reactor operations, and (d) data assessment. Accomplishments for this period are discussed.
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ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (683 download)
Download or read book Development of Precipitated Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report, 1 July 1995--30 September 1995 written by and published by . This book was released on 1995 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The following accomplishments were made on task 4. Reproducibility of Catalyst Preparation: (1) Five slurry reactor tests were completed. Three tests were conducted using catalyst C (100 Fe/3 Cu/4 K/16 SiO2) from three different batches (runs SB-2695, SB-2145 and SA-2715), and two tests were conducted with catalyst B (100 Fe/5 Cu/6 K/24 SiO2) from two different preparation batches (runs SA-2615 and SB-2585). Performance of catalysts from different batches (activity, selectivity and deactivation rates) was similar to that of catalysts from the original batch (synthesized during DOE Contract DE- AC22-89PC89868). Thus, another major objective of the present contract, demonstration of reproducibility of catalyst preparation procedure and performance, has been accomplished. With these tests the work on Task 4 has been successfully completed. Two fixed bed reactor tests of catalysts B and C synthesized using potassium silicate solution as the source of potassium promoter were completed during this period (Task 5. The Effect of Source of Potassium and Basic Oxide Promoter). Activity of catalysts prepared using potassium silicate as the source of potassium promotion was somewhat higher, and their methane selectivities were higher than those of the corresponding catalysts prepared by incipient wetness impregnation using KHCO3 as the source of potassium promoter. However, these differences were not large, and may have been caused by experimental artifacts (e.g. existence of local hot spots in a reactor). A slurry reactor test (SA-2405) of catalyst with nominal composition 100 Fe/5 Cu/2 Ca/24 SiO2 was completed (Task 5). In general, the catalyst activity, space-time-yield, and hydrocarbon selectivities in this run during testing at:260°C, 2.17 MPa (300 psig), 2-2.6 Nl/g-cat/h and H2CO=0.67 were quite good, and comparable to the best results obtained in our Laboratory.
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ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (683 download)
Download or read book Moessbauer Spectroscopy Studies of Iron-catalysts Used in Fischer-Tropsch (FT) Process. Quarterly Technical Progress Report, April 1, 1995--June 30, 1995 written by and published by . This book was released on 1996 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectroscopic investigations were carried out on 10 iron-based catalysts of Fischer-Tropsch synthesis this quarter. Results are described.
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ISBN 13 :
Total Pages : 896 pages
Book Rating : 4.:/5 (89 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995-12 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (683 download)
Download or read book Development of Precipitated Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report, 1 October 1995--31 December 1995 written by and published by . This book was released on 1996 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two stirred tank slurry reactor tests of catalysts with nominal compositions 100 Fe/3Cu/4 K/2 Ca/16 SiO2 (run SB-3115) and 100 Fe/5 Cu/6 K/24 SiO2 (run SA-3155) were completed under task 5, The Effect of Source of Potassium and Basic Oxide Promoter, during the reporting period. Our assessment of the effects of addition of CaO promoter to our baseline catalysts B and C and the use of potassium silicate as the source of potassium promoter is as follows: in general, the addition of CaO promoter did not result in improved performance of the baseline catalysts; the use of CaO promoter may be best suited for operation at higher reaction pressures; the baseline procedure utilizing impregnation of Fe-Cu-SiO2 precursor with aqueous solution of KHCO3 as the source of potassium promoter is the preferred method of preparation; and the procedure which utilizes aqueous K2SiO3 solution as the source of potassium also provides satisfactory results, and may be used as an alternative. A slurry reactor test (run SB-3425) was completed during the reporting period, following the catalyst pretreatment with H2 at 250°C for 4 h (Task 6. Pretreatment Effect Research). This pretreatment resulted in higher catalyst activity than our baseline procedure (H2 at 240°C for 2 h) but also higher methane and gaseous hydrocarbon selectivities (about 10-20% higher).
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ISBN 13 :
Total Pages : 676 pages
Book Rating : 4.:/5 (3 download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996-07 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (683 download)
Download or read book Fischer Tropsch Synthesis in Supercritical Fluids. Quarterly Technical Progress Report, April 1, 1995--June 30, 1995 written by and published by . This book was released on 1996 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our objective for this quarter was to study the effect of co-feeding a 1-olefin on the Ruhrchemie catalyst activity and selectivity, during-both conventional Fisher-Tropsch synthesis (FTS) and FTS under supercritical conditions. We used propane as the supercritical fluid and 1-dodecene (1-C12H24) in this test. Motivation for this study was the work of Fujimoto and co-workers who reported that suppression of methane and enhancement of high molecular weight hydrocarbons selectivities occurs with co-feeding of 1-olefins (1-heptene, 1-tetradecene, or 1-hexadecene) during FTS under supercritical conditions, but not during the conventional FTS (Co-La catalyst supported on silica in supercritical n-pentane). The diffusion coefficients of products in supercritical fluids is discussed.
Download or read book Gantman, Martin written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The folder may include clippings, announcements, small exhibition catalogs, and other ephemeral items.
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ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (727 download)
Download or read book Technology Development for Iron Fischer-Tropsch Catalysts. Technical Progress Report No. 3, March 27, 1991--June 30, 1991 written by and published by . This book was released on 1991 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this contract are to develop a technology for the production of active and stable iron Fischer-Tropsch catalysts for use in slurry-phase synthesis reactors and to develop a scale up procedure for large-scale synthesis of such catalysts for process development and long-term testing in slurry bubble-column reactors. The catalyst performance target in the slurry bubble-column reactor is 88% CO + H2 conversion at a minimum space velocity of 2.4 NL/hr/gFe. Typical feed used to attain this level of conversion is preferred to have H2 and CO in the molar ratio of 0.5 to 1.0. The desired sum of methane and ethane selectivities is no more than 4%, and the conversion loss per week is not to exceed 1%.
Download or read book Moessbauer Spectroscopy Studies of Iron-catalysts Used in Fischer-Tropsch (FT) Processes. Quarterly Technical Progress Report, January-March, 1995 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
