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Technology Development For Iron Fischer Tropsch Catalysts Technical Progress Report No 1 September 26 1990 December 26 1990
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Book Synopsis Technology Development for Iron Fischer-Tropsch Catalysts. Technical Progress Report No. 1, September 26, 1990--December 26, 1990 by :
Download or read book Technology Development for Iron Fischer-Tropsch Catalysts. Technical Progress Report No. 1, September 26, 1990--December 26, 1990 written by and published by . This book was released on 1990 with total page 23 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. With a feed containing H2:CO in the ratio of 0.5 to 1.0, the catalyst performance target in the slurry bubble column reactor is 88% CO + H2conversion at a minimum space velocity of 2.4 NL/h/gFe. The methane + ethane selectivity is desired to be no more than 4% and the conversion loss per week is not to exceed 1%.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Book Synopsis Technology Development for Iron Fischer-Tropsch Catalysts. Final Technical Report, December 18, 1990-December 17, 1993 by :
Download or read book Technology Development for Iron Fischer-Tropsch Catalysts. Final Technical Report, December 18, 1990-December 17, 1993 written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology Development for Iron Fischer-Tropsch Catalysts. Technical Progress Report No. 4, June 26, 1991--September 26, 1991 by :
Download or read book Technology Development for Iron Fischer-Tropsch Catalysts. Technical Progress Report No. 4, June 26, 1991--September 26, 1991 written by and published by . This book was released on 1992 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The preparation of binderless iron oxide spheres has been achieved by a novel sol-gel forming procedure. The starting material is a solution of iron (III) 2-ethylhexanoate in mineral spirits. This solution is added dropwise to an ammoniacal solution of methanol. The low viscosity of the methanol causes the formation of small droplets of the iron solution. The immiscibility of the mineral spirit solution in the methanol and the difference in surface tensions cause the droplets to assume a spherical shape. The presence of ammonia and water at low levels in the methanol promotes the hydrolysis of the iron (III) 2-ethylhexanoate, which causes the spherical particles to harden. The iron-containing spheres can then be isolated by filtration. These spheres are the first ones reported to be made of 100% iron oxide and prepared without a binder. In the initial preparations, the spheres are 100 to 200?m in diameter. Some problems remain to be resolved with this new method of preparation.
Book Synopsis Technology Development for Iron Fischer-Tropsch Catalysts: Technical Progress Report No. 11, March 26 - June 26, 1993 by :
Download or read book Technology Development for Iron Fischer-Tropsch Catalysts: Technical Progress Report No. 11, March 26 - June 26, 1993 written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology Development for Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report, October-December, 1994 by :
Download or read book Technology Development for Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report, October-December, 1994 written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology Development for Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report for Period Ending December 1993 by :
Download or read book Technology Development for Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report for Period Ending December 1993 written by and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conversion data as a function of time of synthesis for the two catalysts are shown in Figures 2 and 3. In general the precipitated catalyst is more active than the iron carbide catalyst with syn-gas conversions starting at 80% as compared to 50% for the latter; however, both catalysts deactivated with increasing reaction time. A comparison of the C2, C3 and C4 olefin selectivities at 26% CO conversion (precipitated catalyst-336 hr of synthesis, iron carbide catalyst-122 hr of synthesis) are shown in Figure 4. Surprisingly the precipitated catalyst had a higher olefin content than the iron carbide catalyst. It has been reported that a similar iron carbide catalyst has higher selectivity for the production of olefins than a ''conventionally prepared'' Fe/Co catalyst. The discrepancy may be due in part to comparing the olefin selectivity of the two catalysts at different conversions. Their ''conventional catalyst'' had a C2-C4 olefin content of 37% at 72% conversion compared to 86% olefin at 55% conversion for the iron carbide catalyst. In general the olefin selectivity of a catalyst is highest at low conversions. The iron carbide catalyst of this study produces more hydrocarbons than the precipitated catalyst; furthermore, it produces a higher fraction of C3 + (86% vs. 84%) and C5+ (67% vs. 61%) hydrocarbons (Figure 5). Correspondingly, the iron carbide catalyst produces less methane and ethane than the precipitated catalyst (Figure 6). These hydrocarbon and C5+ selectivities are similar to those reported earlier.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technology Development for Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report for Period Ending December 31, 1991 by :
Download or read book Technology Development for Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report for Period Ending December 31, 1991 written by and published by . This book was released on 1991 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers two aspects of the catalyst characterization studies: scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Two types of catalysts are the subject of this report: SEM studies with as-received, pretreated and used samples of a Ruhrchemie type catalyst and TEM examination of four crystal structures of FeOOH and Fe3O4.
Book Synopsis Development of Precipitated Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report, 1 January 1995-31 March 1995 by :
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:
Book Synopsis Development of Precipitated Iron Fischer-Tropsch Catalysts. Quarterly Technical Progress Report, April 1, 1995-June 30, 1995 by :
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:
Book Synopsis The Development of Precipitated Iron Catalysts with Improved Stability by : UOP, Inc., Des Plaines, IL (USA)
Download or read book The Development of Precipitated Iron Catalysts with Improved Stability written by UOP, Inc., Des Plaines, IL (USA) and published by . This book was released on 1990 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1984 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis TECHNOLOGY DEVELOPMENT FOR IRON FISCHER-TROPSCH CATALYSIS. by :
Download or read book TECHNOLOGY DEVELOPMENT FOR IRON FISCHER-TROPSCH CATALYSIS. written by and published by . This book was released on 1998 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the proposed work is the development of iron-based Fischer-Tropsch catalysts that combined high activity, selectivity and life with physical robustness for slurry phase reactors that will produce either low-alpha or high-alpha products. The catalyst that is developed will be suitable for testing at the Advanced Fuels Development Facility at LaPorte, Texas or similar sized plant. 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.
Book Synopsis Moessbauer Spectroscopy Studies of Iron-catalysts Used in Fischer-Tropsch (FT) Processes. Quarterly Technical Progress Report, July--September, 1994 by :
Download or read book Moessbauer Spectroscopy Studies of Iron-catalysts Used in Fischer-Tropsch (FT) Processes. Quarterly Technical Progress Report, July--September, 1994 written by and published by . This book was released on 1994 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Moessbauer spectroscopy investigations were carried out on 7 iron-based catalysts during the period under review. A set of four samples subjected to activation in syn gas and Fischer-Tropsch synthesis were sent by R.J. Gormley, to understand the behavior of the low alpha catalyst used in these runs. Another three used catalyst samples extracted from the LaPorte Run II were sent By Dr. Bharat Bhatt to understand the phase distribution and any correlation with the run results. The high alpha UCI catalyst used in the LaPorte Run I was studied to compare with the UCI low alpha catalyst used in LaPorte Run II. All together 10 Moessbauer measurements both at room and low temperatures were carried out to identify the iron phases present in these catalyst samples. Results to date are presented and some plausible trends are outlined.
Book Synopsis Moessbauer Spectroscopy Studies of Iron-catalysts Used in Fischer-Tropsch (FT) Processes. Quarterly Technical Progress Report, April--June, 1994 by :
Download or read book Moessbauer Spectroscopy Studies of Iron-catalysts Used in Fischer-Tropsch (FT) Processes. Quarterly Technical Progress Report, April--June, 1994 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Moessbauer spectroscopy investigations were carried out on 16 iron-based catalysts during the period under review. A set of 10 samples subjected to different pretreatments and Fischer-Tropsch synthesis were investigated to understand the effect of reduction in different gas atmospheres on the iron phases formed. Another set of 5 catalysts pretreated in CO and subjected to Fischer-Tropsch synthesis using two kinds of wax viz., (a) a low molecular wt. wax and (b) heavy wax were also studied. Although it is difficult to draw any definite conclusions from the data, some plausible trends are noticed: (1) pretreatment of a catalyst in H[sub 2] leads to the formation of[var-epsilon]-carbide; (2) pretreatment of a catalyst in H[sub 2]/CO leads to the formation of[chi]-carbide; (3) reduction of UCI-1185-149-2ND catalyst in CO leads to the formation of[chi]-carbide; and (4) reduction of DOE catalysts in CO leads to the formation of[var-epsilon]-carbide. Data are presented on the phases found in the various catalysts.
