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Ruhrchemie process

Figure 5.1. The generations of oxo processes [3] (symbolized by full points).A, First generation Ruhrchemie process 1943 (diaden process [4]) B, second generation Ruhrchemie process C, second generation BASF process D, second generation Kuhlmann process E, third generation Shell process F, third generation LPO (UCC) process G, third generation BASF process H, third generation Exxon (Kuhlmann) process I, fourth generation Ruhrchemie/Rhone-Poulenc process... Figure 5.1. The generations of oxo processes [3] (symbolized by full points).A, First generation Ruhrchemie process 1943 (diaden process [4]) B, second generation Ruhrchemie process C, second generation BASF process D, second generation Kuhlmann process E, third generation Shell process F, third generation LPO (UCC) process G, third generation BASF process H, third generation Exxon (Kuhlmann) process I, fourth generation Ruhrchemie/Rhone-Poulenc process...
Eventually, the spent catalyst solution has to leave the oxo loop for work-up. The Ruhrchemie works of Celanese AG in Oberhausen (Germany) operate several rhodium-based oxo processes besides the well-known Ruhrchemie/Rhone-Poulenc process (RCF1/RP, the described low pressure oxo process with TPPTS-modified Rh catalyst), there are the Ruhrchemie process with an unmodified Rh catalyst at high pressure (comparable to the late ICI process [76] this variant is for the benefit of a high iso/n ratio... [Pg.128]

Reaction in two-phase liquid-liquid systems. The Ruhrchemie process for the manufacture of butyraldehyde from propylene uses a water-soluble rhodium catalyst, while the product butyraldehyde forms an immiscible organic layer. Separation of the product from the catalyst is thus easily accomplished (see Section 5.2.5). [Pg.47]

Disintegration of HCo(CO)4 after hydroformylation by altering the oxidation state of cobalt. This oxidation can be achieved by either hydrothermal treatment (older Ruhrchemie process) or by oxygen treatment in acidic medium (BASF process), followed by regeneration of HCo(CO)4. [Pg.69]

The product data (Table 9) correspond to the usual picture for cobalt hydroformylation. A number of proposals have been put forward to make use of the high-boiling moiety of the raw oxo product. The hydrolysis of esters (formates, butyrates) may be achieved by steam in the presence of aluminum oxide [175] in a similar procedure to the Ruhrchemie process [176], or modified steamcracking is applied to break down the condensation products [177]. [Pg.73]

The aldolic condensation of butyraldehyde occurs in the presence of caustic soda, which acts as a catalyst (Ruhrchemie process). The system operates in this case between 80 and 130 C and between 03 and 1.106 Pa absolute. The continuous removal of one molecule of water yields 2-ethylhexenal, which is hydrogenated in the presence of a nickel catalyst between 100 and 15IPC and between 5 and 10.10 Pa absolute. [Pg.92]

Fig. 5 Schematic flow sheet of a classic oxo process (known earlier as the Ruhrchemie process [22a]). Those parts of the process and equipment which are dispensed with in the RCH/RP process are stippled [1 7e]. Fig. 5 Schematic flow sheet of a classic oxo process (known earlier as the Ruhrchemie process [22a]). Those parts of the process and equipment which are dispensed with in the RCH/RP process are stippled [1 7e].
Weller (81) studied the pressure dependence of the synthesis over a cobalt-thoria-kieselguhr catalyst, at about 1 atmosphere pressure using very short contact times so that the concentration of synthesis products was very low. Under these conditions the synthesis rate increased approximately as the square root of the synthesis gas pressure. The temperature coefficient in Weller s tests corresponded to an activation energy of 26 kcal./ mole. Storch and his coworkers (55) obtained a value of 25 kcal./mole at long contact times corresponding to the Ruhrchemie process. [Pg.142]

Low-pressure hydroformylation of propene to butanals with water-soluble Rh phosphine complexes (Rhone-Poulenc/Ruhrchemie process) 50-150°C, 10-100 bar, 10-100 ppm Rh. [Pg.422]

Despite the fact that the Shell process operates at lower pressure and higher temperatures than the conventional processes, still higher n/iso ratios of the products formed are observed. Thus, in the hydroformylation of propylene an 88/12 ratio of n- over iso-product is obtained, whereas for comparison the distribution in the Ruhrchemie process is 80/20. This type of modified catalyst is not only a hydroformylation but also a hydrogenation catalyst. Thus, in the SheU process about 10-15 % of the olefin fed is lost through hydrogenation to the paraffin whereas the figures for the conventional 0X0 processes are only about 2-3 %. [Pg.22]


See other pages where Ruhrchemie process is mentioned: [Pg.148]    [Pg.101]    [Pg.161]    [Pg.192]    [Pg.70]    [Pg.134]    [Pg.83]    [Pg.192]    [Pg.123]    [Pg.123]   
See also in sourсe #XX -- [ Pg.69 , Pg.73 ]

See also in sourсe #XX -- [ Pg.115 ]




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Hydroformylation Ruhrchemie/Rhone-Poulenc process

Rhodium-catalyzed biphasic hydroformylation of olefins. The Ruhrchemie-Rhone Poulenc process for manufacturing butyraldehyde

Ruhrchemie

Ruhrchemie hydroformylation process

Ruhrchemie process catalysts

Ruhrchemie process converter

Ruhrchemie process development

Ruhrchemie process operation

Ruhrchemie/Rhone-Poulenc process

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