Tailored Alkene Oligomerization with H-ZSM-57 Zeolite

Abstract

The unique lobate‐pore structure of acidic ZSM‐57 zeolite favors the crosswise arrangement of light alkenes and thus their selective dimerization into C6–C12 oligomers (see picture). Allylic hydrogen abstraction and deactivation generally observed with other acidic zeolites is largely suppressed in ZSM‐57.

Molecular Views on Mechanisms of Brønsted Acid-Catalyzed Reactions in Zeolites

“…The products selectivities are markedly impacted by the microporous topology of the zeolite, as reported for example for ethylene, propene, or 2-butene oligomerization . The branching degree of the oligomerized products was found to decrease with the micropore diameter of the zeolite structure.…”

“…The products selectivities are markedly impacted by the microporous topology of the zeolite, as reported for example for ethylene, 411 propene, 412 or 2-butene oligomerization. 413 The branching degree of the oligomerized products was found to decrease with the micropore diameter of the zeolite structure. Contribution of external surface acid sites can, however, significantly lower the shape selectivity effect of the microporous structure.…”

Molecular Views on Mechanisms of Brønsted Acid-Catalyzed Reactions in Zeolites

“…The products selectivities are markedly impacted by the microporous topology of the zeolite, as reported for example for ethylene, propene, or 2-butene oligomerization . The branching degree of the oligomerized products was found to decrease with the micropore diameter of the zeolite structure.…”

“…The products selectivities are markedly impacted by the microporous topology of the zeolite, as reported for example for ethylene, 411 propene, 412 or 2-butene oligomerization. 413 The branching degree of the oligomerized products was found to decrease with the micropore diameter of the zeolite structure. Contribution of external surface acid sites can, however, significantly lower the shape selectivity effect of the microporous structure.…”

Direct synthesis of mesoporous M-SBA-15 (M = Al, Fe, B, Cr) and application to 1-hexene oligomerization

“…samples by means of NH 3 -TPD experiments were almost negligible and for this reason are not shown in Table 4. The poor acidity associated with boron trigonal species detected by 11 B MAS NMR is behind these results.…”

Characterization of COK-5, Member of a New Family of Zeolite Material with Multiple Channel Systems

“…As a result, three new crystal structures are proposed, all derived from the MFS layer (see Figure , Tables −5) …”

“…Opposite to each other wide and small lobes are located, widening the 10 ring channels significantly. Side pockets in a straight channel system are highly appealing for catalytic purposes . Bulky intermediates or transition states can be formed while only specific products can leave the reaction site through the smaller ring openings.…”

Molecular Views on Mechanisms of Brønsted Acid-Catalyzed Reactions in Zeolites

“…The products selectivities are markedly impacted by the microporous topology of the zeolite, as reported for example for ethylene, propene, or 2-butene oligomerization . The branching degree of the oligomerized products was found to decrease with the micropore diameter of the zeolite structure.…”

“…The products selectivities are markedly impacted by the microporous topology of the zeolite, as reported for example for ethylene, 411 propene, 412 or 2-butene oligomerization. 413 The branching degree of the oligomerized products was found to decrease with the micropore diameter of the zeolite structure. Contribution of external surface acid sites can, however, significantly lower the shape selectivity effect of the microporous structure.…”

Direct synthesis of mesoporous M-SBA-15 (M = Al, Fe, B, Cr) and application to 1-hexene oligomerization

“…samples by means of NH 3 -TPD experiments were almost negligible and for this reason are not shown in Table 4. The poor acidity associated with boron trigonal species detected by 11 B MAS NMR is behind these results.…”

Characterization of COK-5, Member of a New Family of Zeolite Material with Multiple Channel Systems

“…As a result, three new crystal structures are proposed, all derived from the MFS layer (see Figure , Tables −5) …”

“…Opposite to each other wide and small lobes are located, widening the 10 ring channels significantly. Side pockets in a straight channel system are highly appealing for catalytic purposes . Bulky intermediates or transition states can be formed while only specific products can leave the reaction site through the smaller ring openings.…”

Molecular Views on Mechanisms of Brønsted Acid-Catalyzed Reactions in Zeolites

“…The products selectivities are markedly impacted by the microporous topology of the zeolite, as reported for example for ethylene, propene, or 2-butene oligomerization . The branching degree of the oligomerized products was found to decrease with the micropore diameter of the zeolite structure.…”

“…The products selectivities are markedly impacted by the microporous topology of the zeolite, as reported for example for ethylene, 411 propene, 412 or 2-butene oligomerization. 413 The branching degree of the oligomerized products was found to decrease with the micropore diameter of the zeolite structure. Contribution of external surface acid sites can, however, significantly lower the shape selectivity effect of the microporous structure.…”

Direct synthesis of mesoporous M-SBA-15 (M = Al, Fe, B, Cr) and application to 1-hexene oligomerization

“…samples by means of NH 3 -TPD experiments were almost negligible and for this reason are not shown in Table 4. The poor acidity associated with boron trigonal species detected by 11 B MAS NMR is behind these results.…”

Characterization of COK-5, Member of a New Family of Zeolite Material with Multiple Channel Systems

“…As a result, three new crystal structures are proposed, all derived from the MFS layer (see Figure , Tables −5) …”

“…Opposite to each other wide and small lobes are located, widening the 10 ring channels significantly. Side pockets in a straight channel system are highly appealing for catalytic purposes . Bulky intermediates or transition states can be formed while only specific products can leave the reaction site through the smaller ring openings.…”