ChemInform Abstract: BUTADIENE VIA OXIDATIVE DEHYDROGENATION

Abstract

Die Petro‐Tex beschreibt die seit 1965 kommerziell bewährte oxidative Dehydrierung (Oxo‐D) von n‐Buten im Gemisch mit Wasserdampf, Luft oder Sauerstoff an einem Fixbettreaktor zu Butadien.

Prevention of Catalyst Deactivation in the Oxidative Dehydrogenation of n-Butene to 1,3-Butadiene over Zn-Ferrite Catalysts

“…Only 5% reduction of the n-butene conversion was observed after 2600 hours (not shown here). The possibility of catalyst deactivation by carbon deposition seems to be low because the carbonaceous residue can be removed from the catalyst surface by reaction with steam [12], which shows the autoregenative nature of the catalyst [1].…”

“…Among them, the oxygen to n-butene ratio is the most important variable because the 1,3-butadiene yield is greatly affected by the oxygen level used [1]. As the oxygen to n-butene ratio increases, higher n-butene conversion is expected at the expense of 1,3-butadiene selectivity.…”

“…Although 1,3-butadiene production is mainly dependent on the extraction of 1,3-butadiene from crude C4 stream, additional establishment of naphtha cracking unit is not a good solution to meet the rising demand for 1,3-butadiene because other basic fractions as well as 1,3-butadiene are excessively produced. In this context, the oxidative dehydrogenation of n-butene, a reaction for forming 1,3-butadiene and water by reacting n-butene with oxygen, becomes more and more interesting because the process is an effective method for on-purpose 1,3-butadiene production [1]. 1 With the promising aspect of the reaction, a number of catalysts have been investigated and ferrite or bismuth molybdate type catalyst is known to be favorable to promote the reaction.…”

“…In this context, the oxidative dehydrogenation of n-butene, a reaction for forming 1,3-butadiene and water by reacting n-butene with oxygen, becomes more and more interesting because the process is an effective method for on-purpose 1,3-butadiene production [1]. 1 With the promising aspect of the reaction, a number of catalysts have been investigated and ferrite or bismuth molybdate type catalyst is known to be favorable to promote the reaction. Recently, Song and colleagues also reported that catalytic performance could be improved by pH control [2][3][4], divalent metal substitution [5], or calcination condition [6].…”

Factors Affect on the Reaction Performance of the Oxidative Dehydrogenation of n-Butene to 1,3-Butadiene Over Zn-Ferrite Catalysts

“…With the promising aspect of the oxidative dehydrogenation reaction, there have been a lot of studies since the early 1970s [2][3][4][5][6][7][8]. Recently, Song et al [9][10][11] have focused on the preparation of two types of catalysts such as ferrite catalysts and multicomponent bismuth molybdate catalysts [12][13][14][15][16][17][18][19][20][21][22][23][24] and found that catalytic performance could be improved by pH control [9,15,20], divalent metal substitution [11], or calcination condition [24].…”