Dehydrogenation of benzene

Hougen and Watson in an analysis of Kassel s data for the homogeneous, vapor-phase dehydrogenation of benzene in a tubular-flow reaetor eonsidered two reaetions ... 

Conversion versus V/F for the dehydrogenation of benzene using the Runge-Kutta fourth order method... 

The gas-phase dehydrogenation of benzene to diphenyl (D) and further to triphenyl (T) is conducted in an ideal isothermal tubular reactor. The aim is to maximize the production of D and to minimize the formation of T. Two parallel, gas-phase reactions occur at atmospheric pressure... 

Let us now consider the pyrolytic dehydrogenation of benzene to diphenyl and triphenyl (Seinfeld and Gavalas, 1970 Hougen and Watson, 1948) ... 

In this section we shall only present the derivative approach for the solution of the pyrolytic dehydrogenation of benzene to diphenyl and triphenyl regression problem. This problem, which was already presented in Chapter 6, is also used here to illustrate the use of shortcut methods. As discussed earlier, both state variables are measured and the two unknown parameters appear linearly in the governing ODEs which are also given below for ease of the reader. 

A rate equation for the dehydrogenation of benzene to cyclohexane in the gas phase for a supported nickel catalyst is reported by Nagata et al (Kagaku Kogaku, Abridged English Edition 2(1), 18, 1964),... 

Niobium and rhodium cluster anions have been prepared by laser vaporization and the reactions with benzene studied by FT-ICR/MS (58). The reactions of the anions and similar cations have been compared. With few exceptions the predominant reaction of the niobium cluster anions and cations was the total dehydrogenation of benzene to form the metal carbide cluster, [Nb C6]-. The Nb19 species, both anion and cation, reacted with benzene to form the coordinated species Nb 9C6I I6p as the predominant product ion. The Nb22 ions also formed some of the addition complex but the Nb2o Nb2i, and all the other higher clusters, formed the carbide ions, Nb C6. ... 

Diphenyl, however, is prepared by thermal dehydrogenation of benzene. (A current of benzene vapour is passed through a red-hot iron tube.)... 

Cyclo-paraffins, also referred to as naphthenes, are mainly produced by dehydrogenation of their equivalent aromatic compounds such as the production of cyclohexane by dehydrogenation of benzene. Cyclohexane is mostly used for the production of adipic acid and nylon manufacturing (Rudd et al., 1981). 

---