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  2. Conversion (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Conversion_(chemistry)

    Conversion and its related terms yield and selectivity are important terms in chemical reaction engineering.They are described as ratios of how much of a reactant has reacted (X — conversion, normally between zero and one), how much of a desired product was formed (Y — yield, normally also between zero and one) and how much desired product was formed in ratio to the undesired product(s) (S ...

  3. Cracking (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Cracking_(chemistry)

    It is the principal industrial method for producing the lighter alkenes (or commonly olefins), including ethene (or ethylene) and propene (or propylene). Steam cracker units are facilities in which a feedstock such as naphtha, liquefied petroleum gas (LPG), ethane , propane or butane is thermally cracked through the use of steam in a bank of ...

  4. Van der Waals constants (data page) - Wikipedia

    en.wikipedia.org/wiki/Van_der_Waals_constants...

    To convert from / to /, divide by 1000. a (L ... Ethane: 5.562 0.0638 Ethanethiol: 11.39 0.08098 ... Water: 5.536 0.03049 Xenon: 4.250 0.05105

  5. Steam cracking - Wikipedia

    en.wikipedia.org/wiki/Steam_cracking

    The propane dehydrogenation process may be accomplished through different commercial technologies. The main differences between each of them concerns the catalyst employed, design of the reactor and strategies to achieve higher conversion rates. [1] Olefins are useful precursors to myriad products. Steam cracking is the core technology that ...

  6. Oxidative coupling of methane - Wikipedia

    en.wikipedia.org/wiki/Oxidative_coupling_of_methane

    Ethylene and ethane that are proposed products have C-H bonds of similar strength. Thus, any catalyst that can activate methane can also activate the products. The yield of ethylene (and/or ethane) is limited by the relative rates of the methane and ethylene reactions, and these rates are very similar.

  7. Ethylene - Wikipedia

    en.wikipedia.org/wiki/Ethylene

    Ethylene (IUPAC name: ethene) is a hydrocarbon which has the formula C 2 H 4 or H 2 C=CH 2. It is a colourless, flammable gas with a faint "sweet and musky " odour when pure. [ 7 ] It is the simplest alkene (a hydrocarbon with carbon–carbon double bonds ).

  8. PetroChina (PTR) Unveils Ethane-to-Ethylene Project in China

    www.aol.com/news/petrochina-ptr-unveils-ethane...

    PetroChina's (PTR) ethane-to-ethylene project will likely generate 600,000 tons of ethylene annually, 300,000 tons of high-density polyethylene and 300,000 tons of full-density polyethylene.

  9. Hydroformylation - Wikipedia

    en.wikipedia.org/wiki/Hydroformylation

    In the case of dicobalt octacarbonyl or Co 2 (CO) 8 as a catalyst, pentan-3-one can arise from ethene and CO, in the absence of hydrogen. A proposed intermediate is the ethylene-propionyl species [CH 3 C(O)Co(CO) 3 (ethene)] which undergoes a migratory insertion to form [CH 3 COCH 2 CH 2 Co(CO) 3]. The required hydrogen arises from the water ...