Hydrogenation terms Links

The rationalization in terms of eq. (III-28) is straight-forward. Let us assume—though it should be confirmed with observations on CDsCH=CH2 and CH3CH=CD2—that the effect is principally due to coupling of the C=C extension and that of CH bonds in which hydrogen is linked directly to the unsaturated carbon atom. Increased stability of the deuterated complex means that the mean potential energy must be reduced by the isotope effect on the cross terms between these two extensions, e.g. ... 

When earbon atoms are linked by a double bond the eompounds are ealled olefins. Sinee these moleeules eontain less than the maximum quantity of hydrogen they are termed unsaturated. Examples inelude ethylene, propylene, and butylene. Note that the latter ean exist in several forms ... 

Compounds eontaining oxygen linked to a earbon and a hydrogen atom are termed aleohols. Simple examples are methyl and ethyl aleohol, CH3OH and C2H5OH, respeetively. Reaetions of aleohols are eharaeterized by the replaeement of either the OH hydrogen atom or the entire OH group ... 

Since the supply of hydrogen in the long term depends on different technical and energy policy developments and frame conditions, such as the expansion of renewable energy sources, the development of clean coal technologies or the required reduction of C02 emissions, hydrogen production is simultaneously closely linked to the conventional energy supply system. 

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