Relevant bibliographies by topics / Isobutene

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Isobutene'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2025

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Journal articles on the topic "Isobutene"

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Kilicarslan, Saliha Cetinyokus, Meltem Dogan, and Timur Dogu. "Contribution of Pd Membrane to Dehydrogenation of Isobutane Over a New Mesoporous Cr/MCM-41 Catalyst." International Journal of Chemical Reactor Engineering 14, no. 3 (2016): 727–36. http://dx.doi.org/10.1515/ijcre-2015-0031.

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Abstract A chromium incorporated mesoporous silicate structured Cr/MCM-41 type catalyst was synthesized following a one-pot hydrothermal route and tested in dehydrogenation of isobutane to isobutene in a Pd membrane reactor. Characterization results of the catalyst proved that it had ordered pore structure with a narrow pore size distribution. This catalyst showed quite high activity for the dehydrogenation of isobutane. Membrane reactor tests performed at 823 K proved the advantages of in-situ removal of produced hydrogen from the reaction zone through the membrane, on isobutene yield. In fac
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Mitran, Gheorghita, Ioan-Cezar Marcu, Tatiana Yuzhakova, and Ioan Sandulescu. "Selective oxidation of isobutane on V-Mo-O mixed oxide catalysts." Journal of the Serbian Chemical Society 73, no. 1 (2008): 55–64. http://dx.doi.org/10.2298/jsc0801055m.

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Four V-Mo-O mixed metal oxides were prepared, characterized and tested for the selective oxidation of isobutane in the temperature range 350-550?C, at atmospheric pressure. Isobutane was mainly oxidized to isobutene and carbon oxides. The systems with low vanadium contents showed low activities but high isobutene selectivities, while the systems with high vanadium contents showed high activities with high carbon oxides selectivities. The effects of temperature, contact time and the molar ratio iso-butane to oxygen on the conversion of isobutane and the selectivity of the oxidation were studied
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Mu, Jiali, Liam John France, Baoan Liu, et al. "Nitrogen-doped carbon nanotubes as efficient catalysts for isobutane dehydrogenation." Catalysis Science & Technology 6, no. 24 (2016): 8562–70. http://dx.doi.org/10.1039/c6cy02314b.

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Lau, Lik Quan, Sin Yuan Lai, Haiyan Li, Cheng Loong Ngan, Mahashanon Arumugam, and Mukhamad Nurhadi. "Thermodynamic Study of One-step Production from Isobutene to Methyl Methacrylate." Bulletin of Chemical Reaction Engineering & Catalysis 17, no. 3 (2022): 590–607. http://dx.doi.org/10.9767/bcrec.17.3.15574.590-607.

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Methyl methacrylate (MMA) has emerged as an essential industrial monomer. However, the toxic by-production and shortage supply of MMA in the global market has gained great attention. Herein, a one-step synthesis to produce MMA from isobutene via a direct oxidative esterification process has been demonstrated to curb the aforementioned downsides. Thermodynamic analysis via Gibbs free energy minimization method proved the feasibility of this route via the equilibrium constant. Despite tert-butanol and isobutane showed higher equilibrium constant than isobutene, they should be avoided. Isobutane
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Cheng, Ming, Huahua Zhao, Jian Yang, et al. "Facile synthesis of ordered mesoporous zinc alumina catalysts and their dehydrogenation behavior." RSC Advances 9, no. 17 (2019): 9828–37. http://dx.doi.org/10.1039/c9ra00217k.

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Liu, Yang, Chengjie Xia, Qi Wang, et al. "Direct dehydrogenation of isobutane to isobutene over Zn-doped ZrO2 metal oxide heterogeneous catalysts." Catalysis Science & Technology 8, no. 19 (2018): 4916–24. http://dx.doi.org/10.1039/c8cy01420e.

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Yu, Feng-Li, Yu-Long Gu, Xun Gao, Qi-Chun Liu, Cong-Xia Xie, and Shi-Tao Yu. "Alkylation of isobutane and isobutene catalyzed by trifluoromethanesulfonic acid-taurine deep eutectic solvents in polyethylene glycol." Chemical Communications 55, no. 33 (2019): 4833–36. http://dx.doi.org/10.1039/c9cc01254k.

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Vogin, Bernard, François Baronnet, and Gérard Scacchi. "Étude chimique et cinétique de l'oxydation homogène en phase gazeuse d'alcanes légers. I. Isobutane." Canadian Journal of Chemistry 67, no. 5 (1989): 759–72. http://dx.doi.org/10.1139/v89-115.

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A literature survey on the homogeneous gas-phase oxidation of light alkanes shows that despite a rather high number of papers there are still, even in the case of isobutane, an important number of unresolved questions, which makes the writing of a reaction scheme rather difficult. To obtain more reliable experimental data, we have studied the homogeneous gas-phase oxidation of isobutane in a conventional static system, at 310 and 340 °C and subatmospheric pressure. This investigation is chiefly aimed at identifying and measuring the major primary products of the reaction. A chain radical schem
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Takita, Yusaku, Xia Qing, Akihide Takami, Hiroyasu Nishiguchi, and Katsutoshi Nagaoka. "Oxidative dehydrogenation of isobutane to isobutene III." Applied Catalysis A: General 296, no. 1 (2005): 63–69. http://dx.doi.org/10.1016/j.apcata.2005.07.049.

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Gogerty, David S., and Thomas A. Bobik. "Formation of Isobutene from 3-Hydroxy-3-Methylbutyrate by Diphosphomevalonate Decarboxylase." Applied and Environmental Microbiology 76, no. 24 (2010): 8004–10. http://dx.doi.org/10.1128/aem.01917-10.

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ABSTRACT Isobutene is an important commercial chemical used for the synthesis of butyl rubber, terephthalic acid, specialty chemicals, and a gasoline performance additive known as alkylate. Currently, isobutene is produced from petroleum and hence is nonrenewable. Here, we report that the Saccharomyces cerevisiae mevalonate diphosphate decarboxylase (ScMDD) can convert 3-hydroxy-3-methylbutyrate (3-HMB) to isobutene. Whole cells of Escherichia coli producing ScMDD with an N-terminal 6×His tag (His6-ScMDD) formed isobutene from 3-HMB at a rate of 154 pmol h−1 g cells−1. In contrast, no isobuten
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Dissertations / Theses on the topic "Isobutene"

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Tapper, Tristan T. "Living cationic polymerization of isobutene." Thesis, Aston University, 1999. http://publications.aston.ac.uk/9621/.

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The polymerization of isobutene initiated by 1-chloro-1-phenylethane has been investigated, and molecular weight studies conducted using size exclusion chromatography. Polymerizations carried out in a 40/60 (v/v) mixture of dichloromethaneIcyclohexane, using titanium (IV) chloride as a catalyst in the presence of pyridine at -30 °C were found to be controlled and living. The number average molecular weights of the polymers increased linearly with monomer conversion, and the molecular weight distributions were between 1.15 and 1.20. Efficiencies of initiation were between 80 and 100%, and evide
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Joly, Laurence. "New initiating systems for the polymerisation of isobutene." Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/12316.

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The work described in this thesis has been concerned with the preparation of high vinylidene end-group polyisobutene using new initiating systems such as alkoxydifluoroboranes (ROBF<SUB>2</SUB>) and alkyldifluoroboranes (RBF<SUB>2</SUB>), and their adducts with ethanol and Brønsted acids (water, sulfuric acid, trifluorosulfonic acid, acetic acid and trifluoroacetic acid). In all cases, comparison is made with the currently used initiating system of a 1 : 1 complex of boron trifluoride with ethanol (BF<SUB>3</SUB>.EtOH). From nuclear magnetic resonance (NMR) spectroscopic studies, <I>n</I>-pent
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SZABO, MOINIER JEANNINE. "Contribution a l'etude de l'isomerisation catalytique des butenes en isobutene." Caen, 1989. http://www.theses.fr/1989CAEN2012.

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L'isomerisation des n-butenes en isobutene est realisee au contact de catalyseurs solides tels que les alumines ou silice-alumines. Apres optimisation des conditions operatoires (450c), nous avons etabli un modele cinetique pour cette reaction et caracterise chaque etape par une constante de vitesse. 1) quel que soit le butene lineaire de depart, toutes les etapes d'isomerisation sont du premier ordre. 2) la migration de la double liaison et l'isomerisation cis-trans ont les vitesses les plus elevees. 3) les constantes caracterisant l'isomerisation squelettale sont de 5 a 10 fois plus faibles
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Mazumder, Baishakhi. "Oxidative dehydrodimerisation and aromatisation of isobutene on Bi₂O₃-SnO₂." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250237.

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Lilic, Aleksandra. "Study of catalysts for isobutene and alcohols transformation in view of biomass valorization." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1084/document.

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Ce travail de thèse se focalise sur l'impact des propriétés acido-basiques des catalyseurs (quantité et force des sites) dans la production d’acroléine par couplage oxydant d’alcools en phase gazeuse. L'influence du rapport entre site acides et sites basiques des catalyseurs a été étudiée dans la condensation aldolique de l'acétaldéhyde et du formaldéhyde en acroléine, réalisée en conditions oxydantes. Les données et corrélations obtenues ont donné des informations indispensables à l’identification des paramètres qui doivent être modifiés afin d'améliorer la sélectivité en acroléine. La premiè
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Habimana, Jean de la Croix. "Fonctionnalisation directe en polymérisation cationique : synthèse d'oligoisobutène azido-téléchélique." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0016.

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Sjölander, Johan. "Production and harvesting of volatile jet fuel precursors from Synechocystis sp. PCC 6803." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-397851.

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The world is currently faced with the enormous challenge of slowing down human triggered global warming. As the global energy demand increases, there is an urgent need for renewable and carbon-neutral fuel-sources. Isoprene and isobutene are crude-oil derived, short, volatile and reactive hydrocarbons that can be polymerised into longer chains to be used as jet fuel. Isoprene has previously been produced from the cyanobacterial strain Synechocystis sp. PCC 6803 but there has been no reported isobutene synthesis from any photosynthetic organism. This work aimed to synthesise isobutene in Synech
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Vautrin-Ul, Christine. "Polymérisation cationique du penta-1,3-diène et copolymérisation avec l'isobutène : contribution à la synthèse de nouveaux copolymères triblocs." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL082N.

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Cette étude est consacrée à la polymérisation cationique du penta-1,3-diène ou pipérylène (PD) et à sa copolymérisation avec l'isobutène (IB), l'objectif principal étant la préparation de copolymères triblocs constitués d'une séquence centrale élastomère polyisobutène et de deux segments rigides de type poly(penta-1,3-diène) partiellement cyclisé. La première partie de ce travail traite de la polymérisation cationique de chacun des isomères cis et trans du penta-1,3-diène et d'un pipérylène technique (mélange cis/trans: 45/55) contenant 10% d'impuretés (hydrocarbures en C5). Une analyse complè
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Weber, Daniel [Verfasser], and B. [Akademischer Betreuer] Kraushaar-Czarnetzki. "Oxidation von Isobutan und Isobuten zu Methacrolein an einem neuen Mo-basierten Mischoxid-Katalysator / Daniel Weber ; Betreuer: B. Kraushaar-Czarnetzki." Karlsruhe : KIT Scientific Publishing, 2019. http://d-nb.info/1186144769/34.

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Lucas, Frédéric. "Oligomères dihydroxytéléchéliques à basse Tg et stabilité accrue : élaboration par métathèse et optimisation des propriétés pour application dans le domaine spatial." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR11400/document.

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L´objectif du travail présenté dans ce manuscrit consiste à conserver les bonnes propriétés mécaniques du poly(butadiène) dihydroxytéléchélique (PBHT) tout en améliorant sa stabilité. Un des principaux verrous techniques de cette approche réside dans le fait que les doubles liaisons responsables la flexibilité du matériau sont également la cause de son vieillissement par oxydation. Les solutions proposées reposent sur l´utilisation de la métathèse comme outils de synthèse de polymères insaturés. Deux grandes voix de synthèse ont été étudiées : la polymérisation par ouverture de cycle via métat
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Books on the topic "Isobutene"

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Sazak, B. Ftir study of the skeletal isomerisation reaction of 1-butene to isobutene on h-ferrierite. UMIST, 1998.

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A, Sangalov I͡U. Polymers derived from isobutylene: Synthesis, properties, application. VSP, 2001.

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Urbanowicz, J. T. Pseduo-stationary oblique-shock-wave reflections in low gamma gases - isobutane and sulphur hexafluoride. Institute for Aerospace Studies, 1988.

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Urbanowicz, J. T. Pseudo-stationary oblique-shock-wave reflections in low gamma gas-isobutane and sulphur hexafluoride. Dept. of Aerospace Science and Engineering, 1987.

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Koller, Manuel. Beitrag zum Mechanismus der [alpha]-Alkinon-Cyclisierung [alpha-Alkinon-Cyclisierung]: Die Gasphasen-Flussthermolyse von 1-Isobutenyl- und 2-Methylphenyl-Alkinyl-Ketonen. Zentralstelle der Studentenschaft, 1986.

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6

Parker, Philip M. The 2007 Import and Export Market for Isobutene-Isoprene (Butyl) Rubber (IIR) or Halo-Isobutene-Isoprene Rubber (CIIR or BIIR) in China. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007 Import and Export Market for Isobutene-Isoprene (Butyl) Rubber (IIR) or Halo-Isobutene-Isoprene Rubber (CIIR or BIIR) in India. ICON Group International, Inc., 2006.

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The World Market for Isobutene-Isoprene (Butyl) Rubber (IIR) or Halo-Isobutene-Isoprene Rubber (CIIR or BIIR): A 2004 Global Trade Perspective. Icon Group International, Inc., 2005.

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Parker, Philip M. The World Market for Isobutene-Isoprene (Butyl) Rubber (IIR) or Halo-Isobutene-Isoprene Rubber (CIIR or BIIR): A 2007 Global Trade Perspective. ICON Group International, Inc., 2006.

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Parker, Philip M. The 2007 Import and Export Market for Isobutene-Isoprene (Butyl) Rubber (IIR) or Halo-Isobutene-Isoprene Rubber (CIIR or BIIR) in United States. ICON Group International, Inc., 2006.

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Book chapters on the topic "Isobutene"

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Mavrovouniotis, Gretchen M., Wu-Cheng Cheng, and Alan W. Peters. "Role of Hydrogen Transfer in Isobutene—Isobutane Selectivities." In ACS Symposium Series. American Chemical Society, 1994. http://dx.doi.org/10.1021/bk-1994-0571.ch002.

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Mirabelli, Ilaria. "Dehydroisomerization of N-Butane to Isobutene." In Encyclopedia of Membranes. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_1644.

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Mirabelli, Ilaria. "Dehydroisomerization of N-butane to Isobutene." In Encyclopedia of Membranes. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-40872-4_1644-1.

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Gevert, S. Börje, Peter Abrahamsson, and Sven G. Järås. "Oligomerization of Isobutene with an Improved Catalyst." In Novel Materials in Heterogeneous Catalysis. American Chemical Society, 1990. http://dx.doi.org/10.1021/bk-1990-0437.ch025.

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Cavani, Fabrizio, Clara Comuzzi, Giuliano Dolcetti, et al. "The Catalytic Activity of Wells—Dawson and Keggin Heteropolyoxotungstates in the Selective Oxidation of Isobutane to Isobutene." In ACS Symposium Series. American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0638.ch010.

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Hill, David J. T., T. T. Le, James H. O'Donnell, M. C. Senake Perera, and Peter J. Pomery. "Temperature Effects on the Radiation Degradation of Poly(isobutene) and Poly(α-methylstyrene)." In ACS Symposium Series. American Chemical Society, 1993. http://dx.doi.org/10.1021/bk-1993-0527.ch004.

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Lide, David R. "Isobutane." In Handbook of Organic Solvents. CRC Press, 2024. http://dx.doi.org/10.1201/9781003575191-284.

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Gooch, Jan W. "Isobutane." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6494.

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Bährle-Rapp, Marina. "Isobutane." In Springer Lexikon Kosmetik und Körperpflege. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_5299.

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Gooch, Jan W. "Isobutylene." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6497.

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Conference papers on the topic "Isobutene"

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Osborne, Christine. "HDPE Solves Alkylation Sewer Corrosion Problem in Refinery." In CORROSION 2008. NACE International, 2008. https://doi.org/10.5006/c2008-08515.

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Abstract Oil refineries use sulfuric acid or hydrofluoric acid as a catalyst in the alkylation of isobutene. Process wastewater streams discharging from alkylation units, where this process step takes place, are often characterized by a low pH. This low pH wastewater reacts with alkaline Portland cement in concrete wastewater collection and conveyance structures, compromising their structural integrity. This paper reviews one oil refinery’s use of high-density polyethylene liners to renovate and protect its deteriorated concrete process sewer structures downstream of its sulfuric acid alkylati
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Peñuela, Leomar, and Jose Chirinos. "Carbon Steel Flanges and Welds Evaluation on HF-Alkylation Unit." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99381.

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Abstract In 1995, there were two failures in the 20.000 BPD HF Alky unit at the Amuay Refinery causing a shutdown of the unit. The failures occurred in one flange and one weld in the depropanizer charge carbon steel pipe, containing propane, isobutane and anhydrous hydrofluoric acid at 190 F (88 C) and 321 psig (22.5 Kg/cm2). Examination showed severe uniform corrosion at the inside surface of the flange while the adjacent elbow showed minimal corrosion loss. The other failure showed preferential attack in the weld without corrosion loss in the pipe components. A complete evaluation of the Alk
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Al-Dhafiri, Saad, Tareq Al-Foudari, Laxma Reddy Kethi, Sameer Patil, and Govindrajan Narayanasamy. "Behavior of Super-Austenitic Stainless Alloy (UNS N08020) in Sulfuric Acid Alkylation Plant." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05885.

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Abstract The sulfuric acid alkylation process chemically combines isobutane with a low octane olefin (usually a mixture of propylene and butylene) in the presence of sulfuric acid catalyst to yield higher octane alkylate product used in blending gasoline pool. Corrosion is primarily driven by sulfuric acid and esters formed in the process. Materials of construction in the plant are generally carbon steel although austenitic stainless steels like UNS S31603 and UNS N08020 are used selectively to resist acid corrosion. Temperature and flow velocity have a direct relationship to corrosion rates,
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Fatima, Mariyam, Stephan Schlemmer, Dirk Hoppen, Holger Müller, and Oliver Zingsheim. "MILLIMETER AND SUBMILLIMETER SPECTROSCOPY OF ISOBUTENE." In 2022 International Symposium on Molecular Spectroscopy. University of Illinois at Urbana-Champaign, 2022. http://dx.doi.org/10.15278/isms.2022.wn08.

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Guliyeva, Sevinj, Fakhraddin Yusubov, and Narmina Alieva. "Application of Artificial Intelligence in the Process of Adsorption Purification of Isobutane, Isobutylene and Benzene from Impurities." In 2nd International Scientific-Practical Conference "Machine Building and Energy: New Concepts and Technologies". Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-fv9ogj.

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The article is devoted to mathematical modeling and fuzzy logic in controlling the process of adsorption purification of isobutane and isobutylene from impurities. The article also conducted research on the production of high-purity isobutane and isobutylene from the isobutane-isobutylene fraction of pyrolysis gas. A method has been developed for increasing the purity of isobutane and isobutylene fractions isolated from pyrolysis gas using sulfuric acid. It is proposed to introduce adsorption units into the plant technological scheme for separating the hydrocarbons isobutane and isobutylene fr
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Huan, Zhongjie, and Chaohong Guo. "Optimization of the Capillary Tube for Domestic Refrigerator With Mixture of Propane and Isobutene as Refrigerant." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22574.

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The hydrocarbon mixture of R290/R600a with mass ratio of 50/50 is regarded as a promising long-term refrigerant to replace R12 in domestic refrigerators since it can potentially provide higher COP than R12 system under the same operating conditions. In practical application, the length of the capillary tube should be matched with this alternative mixture; otherwise, the refrigerator system can probably consume more energy than the R12 system. In this paper, a simulation model of adiabatic capillary tube, in which some empirical coefficients are modified due to their inapplicability for R290/R6
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SILVA, G. A., J. C. TEIXEIRA, L. STRAGEVITCH, and J. M. F. SILVA. "MOVING BOUNDARY IN NON-EQUILIBRIUM SIMPLE BATCH REACTIVE DISTILLATION IN A NON-IDEAL MIXTURE ISOBUTENE/METHANOL/MTBE." In XXII Congresso Brasileiro de Engenharia Química. Editora Blucher, 2018. http://dx.doi.org/10.5151/cobeq2018-pt.0693.

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Al Shoaibi, Ahmed, and Anthony M. Dean. "Kinetic Analysis of C4 Alkane and Alkene Pyrolysis: Implications for SOFC Operation." In ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/fuelcell2008-65033.

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Pyrolysis experiments of isobutane, isobutylene, and 1-butene were performed over a temperature range of 550–750 °C and a pressure of ∼ 0.8 atm. The residence time was ∼ 5 s. The fuel conversion and product selectivity were analyzed at these temperatures. The pyrolysis experiments were performed to simulate the gas phase chemistry that occurs in the anode channel of a solid-oxide fuel cell. The experimental results confirm that molecular structure has a substantial impact on pyrolysis kinetics. The experimental data show considerable amounts of C5 and higher species (∼2.8 mole % with isobutane
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Mago, P. J., L. M. Chamra, and C. Somayaji. "Optimization of Organic Rankine Cycles Using Dry Fluids." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14805.

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This paper presents an optimization of Organic Rankine Cycles "ORC" using dry organic fluids, to convert waste energy to power from low grade heat sources. The dry organic working fluids under investigation are R113, R245ca, R123, and Isobutene. Different configurations such as reheat ORC and regenerative ORC will be analyzed and compared with the basic ORC in order to determine the configuration that presents the best performance. The optimization for the different configurations will be performed using a combined first and second law analysis by varying some system operating parameters at va
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"THE ANALYSIS OF LITERARY AND EXPERIMENTAL STUDIES WHEN DEVELOPING THE THEORETICAL BASES OF THE PROCESS OF OXIDATION OF ISOBUTENE ON OXIDIC CATALYSTS." In Advanced Studies in Science: Theory and Practice. Global Partnership on Development of Scientific Cooperation LLC, 2015. http://dx.doi.org/10.17809/14(2015)-19.

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Reports on the topic "Isobutene"

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Assabumrungrat, Suttichai, and Bunjerd Jongsomjit. Direct synthesis of isobutene from CO hydrogenation with zirconium dioxide catalysts. Chulalongkorn University, 2008. https://doi.org/10.58837/chula.res.2008.68.

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This report summarizes the second year research output of the project “Direct Synthesis of Isobutene from CO Hydrogenation with Zirconium dioxide Catalysts”. In the first year work, the catalytic performance on isosynthesis and characterization of different micron- and nanoscale zirconia catalysts were carried out and compared with those of ceria. In addition, the effect of temperature ramp during calcination of zirconia on characteristics of nanoscale zirconia catalysts and their catalytic performance for isosynthesis was investigated. In this second year work, the catalytic performance of zi
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Assabumrungrat, Suttichai, and Bunjerd Jongsomjit. Direct synthesis of Isobutene from CO Hydrogenation with ZrO [subscript 2] catalysts. Chulalongkorn University, 2007. https://doi.org/10.58837/chula.res.2007.76.

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The focus of this research was to investigate the catalytic performances of various zirconia catalysts on isosynthesis. The characteristics of the catalysts were determined by means of various techniques including BET surface area, XRD, NH[[subscript 3][superscript -]] and CO[[subscript 2][superscript -]] TPD, TEM and SEM/EDX. In the first portion, different micron- and nanoscale zirconia catalysts were employed for the isosynthesis and compared with those of ceria. It was found that the nanoscale catalysts showed higher activity and selectivity of isobutene in hydrocarbons than the micronscal
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3

Sekhar, M. V. C., and G. Jean. Methane to isobutene (MTI): a proposal for process development. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/304386.

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Latshaw, B. E. Dehydration of isobutanol to isobutene in a slurry reactor. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/171265.

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Gallagher, J. S., D. Linsky, G. Morrison, and J. M. H. Levelt Sengers. Thermodynamic properties of a geothermal working fluid; 90% isobutane-10% isopentane: Final report. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/6238516.

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McCarty, Robert. NGXLNGD-R01 A Comparison of Mathematical Models for the Prediction of LNG Densities. Pipeline Research Council International, Inc. (PRCI), 1997. http://dx.doi.org/10.55274/r0011774.

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The purpose of this study was to optimize and compare several different mathematical models using the experimentally determined PVTx density data of Haynes, et al. (1976), Haynes and Hiza (1976), Hiza, et al. (1976), and Hiza (1976). These data are for the liquid phase of methane, ethane, propane, normal butane, isobutane and nitrogen, and various mixtures thereof. The temperature range of the correlations was limited (95-150 K) and the pressures to those of saturation, the range of which was about 0 to 20 atmospheres. The goals of the study were to produce one or more computer models which wo
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7

Anthony, R. G., and A. Akgerman. Catalyst and process development for synthesis gas conversion to isobutylene. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/7046162.

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Anthony, R. G., and A. Akgerman. Catalyst and process development for synthesis gas conversion to isobutylene. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/7054736.

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9

Boyarski, Adam M. Additives That Prevent Or Reverse Cathode Aging In Drift Chambers With Helium-Isobutane Gas. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/798926.

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Gajda, G. J., and P. T. Barger. Development of a catalyst for conversion of syngas-derived materials to isobutylene. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5899569.

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