dehydrogenation of butane

The oxidative dehydrogenation of butane was studied at temperatures between 450 and 550°C using a conventional fixed‐bed reactor and inert membrane catalytic reactors with different feed arrangements. 0000003365 00000 n <]>> f���l!�x9����>D4.؞��������E/. Learn about our remote access options, Dept. The de­hy­dro­gena­tion re­ac­tion is the re­ac­tion of hy­dro­gen atoms split­ting off from an or­gan­ic mol­e­cule. 0000000893 00000 n Modelling of a two-zone fluidised bed reactor for the oxidative dehydrogenation of n-butane. 201 0 obj<> endobj On the whole this process is tech­no­log­i­cal­ly sim­i­lar to the process used in the de­hy­dro­gena­tion of bu­tane, but in­cludes a num­ber of spe­cial fea­tures: Di­vinyl (bu­ta­di­ene-1,3) can be ob­tained in one stage di­rect­ly from bu­tane (a mix­ture of pure bu­tane with the un­re­act­ed bu­tane-buty­lene mix­ture must be put into the re­ac­tor), but the yield of the prod­uct will be low­er than in the de­hy­dro­gena­tion of bu­tane in two stages. Computer-aided optimisation of catalytic dehydrogenation in packed-bed membrane reactor. One of the most exciting and ambitious home-chemistry educational projects. Butane dehydrogenation above 803 K resulted in higher formation of butadiene, a known precursor to coke. You've already subscribed with this email. Learn more. CATOFIN® Propane/Butane Dehydrogenation Description Benefits Literature Contact The CATOFIN® technology is a unique process for the production of olefins, such as propylene (from propane) and iso-butylene (from iso-butane). Vanadium-based catalytic membrane reactors for the oxidative dehydrogenation of propane. Catalytic membrane reactors for the oxidehydrogenation of propane: experimental and modelling study. No spam – just awesome science news once a week. %%EOF 203 0 obj<>stream 0000010119 00000 n 0000013672 00000 n From isobu­tane, isobuty­lene may be ob­tained: re­ac­tion takes place with heat­ing to 550-600 °C (1022-1112 °F): the chro­mia-alu­mi­na cat­a­lyst Cr₂O₃/Al₂O₃ is used. Analysis of single and multi-stage membrane reactors for the oxidation of short-chain alkanes—Simulation study and pilot scale experiments. endstream endobj 202 0 obj<>/OCGs[204 0 R]>>/PieceInfo<>>>/LastModified(D:20071023150155)/MarkInfo<>>> endobj 204 0 obj<>/PageElement<>>>>> endobj 205 0 obj<>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC]/ExtGState<>/Properties<>>>/StructParents 0>> endobj 206 0 obj<> endobj 207 0 obj<> endobj 208 0 obj[/ICCBased 224 0 R] endobj 209 0 obj<> endobj 210 0 obj<> endobj 211 0 obj<> endobj 212 0 obj<>stream In addition, in the membrane reactor the formation of hot spots decreased considerably, leading to a more stable and safer operation. In the de­hy­dro­gena­tion of bu­tane, hy­dro­car­bon goes to the de­vice in com­pressed form (in nor­mal con­di­tions, bu­tane is a gas which eas­i­ly changes to liq­uid at -0.5 °C or 31.1 °F). 0000000016 00000 n With the chro­mia-alu­mi­na cat­a­lyst, at a tem­per­a­ture of 450-650 °C (842-1202 °F), bu­ta­di­ene-1,3 forms from bu­tane. The structure, specific surface area, and basic and redox properties of these catalysts were determined by XRD, BET, CO2-TPD, and H2-TPR. xref Vapour phase oxidation of toluene in V/Al2O3–TiO2 catalytic reactors. x�b```b``Me`e``�� �� ,@Q���� g`ط*���i�����-���> �C@$�T2�h N�S�@Z�e�"*��X��I�``0`Hc����z��A��Gצ�A�K�,�8�=�c��*H�!�z�s�n�3�@� ��u@Z����W�/@ 10�[�s�A� �J*� trailer The oxidative dehydrogenation of butane was studied at temperatures between 450 and 550°C using a conventional fixed‐bed reactor and inert membrane catalytic reactors with different feed arrangements. Comparative study of oxidative coupling of methane modeling in various types of reactor. Evaluation of porous ceramic membranes as O2 distributors for the partial oxidation of alkanes in inert membrane reactors. 0000016086 00000 n In cer­tain con­di­tions, an alka­di­ene rather than an alkene may form from bu­tane of nor­mal struc­ture (CH₃-CH₂-CH₂-CH₃) dur­ing de­hy­dro­gena­tion. ticular interest is the dehydrogenation of n-butane to form butenes and butadiene, which are precursors for the manu-facture of synthetic rubber. The membrane reactor was found to be more efficient than a fixed‐bed reactor under most of the conditions investigated. Oxidative dehydrogenation of butane using inert membrane reactor with a non-uniform permeation pattern. 0000015053 00000 n Thermal stability of γ-Al2O3/α-Al2O3 mesoporous membranes. For hy­dro­gen to split off from a sat­u­rat­ed aliphat­ic (non-cycli­cal) hy­dro­car­bon, heat­ing of up to 500-600 °C (or 932-1112 °F). Effect of the membrane activity on the performance of a catalytic membrane reactor. The cat­a­lyst should not make con­tact with the buty­lene for more than 2-3 sec­onds, oth­er­wise a large quan­ti­ty of sec­ondary prod­ucts and soot may form, which af­fects the yield of the prod­uct of re­ac­tion – buty­lene. the pres­ence of a cat­a­lyst is re­quired to car­ry it out. 0000003946 00000 n With a pis­ton, bu­tane is moved to the heat ex­chang­er, where it is heat­ed, evap­o­rat­ed, and thus changes to gaseous form. 20 wt% V as V2O5on MgO and 17.8 wt% Mo as MoO3on MgO were used as catalyst for the ODH of n-butane. On mak­ing con­tact with the cat­a­lyst, the bu­tane va­por de­hy­drates, form­ing a mix­ture from un­re­act­ed n-bu­tane, butylenes (butene-1 and butene-2), hy­dro­gen and sec­ondary prod­ucts. When inert membrane reactors were employed, a ceramic membrane was used to distribute oxygen to a fixed bed of V‐Mg‐O catalyst. 0000003869 00000 n Please choose a different one. We've sent you a confirmation email. and you may need to create a new Wiley Online Library account. In de­hy­dro­gena­tion, bu­tane does not form in a cy­cle and does not form cy­clobutene be­cause cy­clobutene has an un­sta­ble struc­ture; at the re­ac­tion tem­per­a­ture it is also ca­pa­ble of ther­mal­ly break­ing down to eth­yl­ene СН₂=СН₂. Please confirm your subscription to begin receiving our newsletter. . 0000011968 00000 n This is char­ac­ter­is­tic for alka­nes with a car­bon chain con­tain­ing more than 4 car­bon atoms. Kinetic Study of the Oxidative Dehydrogenation of Butane on V/MgO Catalysts. The present study shows that Pt/Mg(In)(Al)O exhibits superior performance for butane dehydrogenation compared to supported Pt catalysts promoted with Sn, Ge, … A re­ac­tor for ob­tain­ing butylenes from n-bu­tane is a tubu­lar de­vice. x�bbb`b``Ń3� �1@� Ǵ� This is a cat­alyt­ic process – i.e. 0000022233 00000 n Af­ter the sep­a­ra­tion of sec­ondary prod­ucts, bu­tane and buty­lene in the mix­ture, buty­lene may be sub­ject­ed to fur­ther de­hy­dro­gena­tion – in this way bu­ta­di­ene-1,3 can be ob­tained. Bloggers and marketing: marketing@melscience.com, Features of the dehydrogenation process of butane, Characteristics of ammonia and catalytic oxidation, the for­ma­tion of di­vinyl (bu­ta­di­ene-1,3) is also pos­si­ble with­out a, the yield of bu­ta­di­ene-1,3 can be in­creased by de­creas­ing its par­tial pres­sure in the re­ac­tor – this can be achieved by adding. Reactant distribution by inert membrane enhances packed-bed reactor stability. The vanadium-oxygen centers are necessary to activate butane, while the MgO component is necessary to modify the acidic property of vanadium oxide and to reduce the … Simulation of a membrane reactor for oxidative dehydrogenation of propane, incorporating radial concentration and temperature profiles. The fea­tures of the de­hy­dro­gena­tion re­ac­tion of low­er alka­nes can be seen clear­ly based on the ex­am­ple of hy­dro­gen split­ting off from the bu­tane mol­e­cule. 0000001803 00000 n 0000018756 00000 n 0000005257 00000 n Please check your email for instructions on resetting your password. Performance evaluation of a novel reactor configuration for oxidative dehydrogenation of ethane to ethylene. N-Butane Oxidative Dehydrogenation by Membrane Reactor. Hydrogen production via natural gas steam reforming in a Pd-Au membrane reactor. 0000011594 00000 n A re­ac­tor for ob­tain­ing butylenes from n-bu­tane is a tubu­lar de­vice. By entering your email address you agree to our Privacy Policy. 0000001174 00000 n Oxidative dehydrogenation of butane on V/MgO catalytic membranes. Modeling-based optimization of a fixed-bed industrial reactor for oxidative dehydrogenation of propane. In de­hy­dro­gena­tion, C-H bonds are torn, hy­dro­gen atoms split off from neigh­bor­ing car­bon atoms, and in this place a dou­ble bond forms. Click here for amaz­ing chem­istry ex­per­i­ments with de­tailed de­scrip­tions.

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