Hydrotalcite-supported palladium catalysts

Synthesis, characterization and catalytic activities of a reusable polymer-anchored palladium(II) complex: effective catalytic hydrogenation of various organic substrates

“…This band is shifted toward lower frequency in the complex consistent with coordination of the nitrogen to the metal atom. The polymer metal complex exhibited important IR peaks at 1620 cm -1 (m (-C=N-) stretching), 1590 cm -1 (m (-C=C-) stretching, aromatic), 720 cm -1 (orthometallation) [37], 2290 cm -1 (m (-C:N) of benzonitrile), 455 cm -1 (m (Pd-N) [38] and 355 cm -1 (m (Pd-Cl) [19]. The polymeric complex was found to be diamagnetic, consistent with a low-spin d 8 square-planar geometry around Pd(II) [39].…”

Synthesis, characterization and catalytic activities of a reusable polymer-anchored palladium(II) complex: effective catalytic hydrogenation of various organic substrates

“…This band is shifted toward lower frequency in the complex consistent with coordination of the nitrogen to the metal atom. The polymer metal complex exhibited important IR peaks at 1620 cm -1 (m (-C=N-) stretching), 1590 cm -1 (m (-C=C-) stretching, aromatic), 720 cm -1 (orthometallation) [37], 2290 cm -1 (m (-C:N) of benzonitrile), 455 cm -1 (m (Pd-N) [38] and 355 cm -1 (m (Pd-Cl) [19]. The polymeric complex was found to be diamagnetic, consistent with a low-spin d 8 square-planar geometry around Pd(II) [39].…”

Chemistry and materials options of sustainable carbon materials made by hydrothermal carbonization

“…35 The direct route preferred by industry can only be achieved in the vapor phase under rather harsh conditions. 36 Compared with the commercial hydrophobic charcoal-supported catalyst, the more hydrophilic HTC catalyst showed good selectivity in water towards partial hydrogenation, generating mainly cyclohexanone. A possible mechanism is that the sorption properties of phenol and cyclohexanone onto hydrothermal coal are so different that the reaction site is simply depleted of the intermediate which then can be isolated (Fig.…”

Catalytic Hydrogenation of Alkylphenols for Renewable Caprolactone

“…44,45 Among the reported studies, Pd-based catalysts have been shown to achieve high selectivity to cyclohexanone (>98 mol%). [46][47][48][49][50][51][52][53] These studies have also explored different characteristics of the support used for Pd metal particles, ranging from acid support such as alumina, basic supports such as MgO, and even carbon supports with various hydrophobicity and hydrophilicity. 28,29,31,48,54,55 However, the extent of the effect of the support on the selectivity of the phenol hydrogenation remains in discussion and is less significant relative to the operating conditions and active site composition.…”

Synthesis, characterization and catalytic activities of a reusable polymer-anchored palladium(II) complex: effective catalytic hydrogenation of various organic substrates

“…This band is shifted toward lower frequency in the complex consistent with coordination of the nitrogen to the metal atom. The polymer metal complex exhibited important IR peaks at 1620 cm -1 (m (-C=N-) stretching), 1590 cm -1 (m (-C=C-) stretching, aromatic), 720 cm -1 (orthometallation) [37], 2290 cm -1 (m (-C:N) of benzonitrile), 455 cm -1 (m (Pd-N) [38] and 355 cm -1 (m (Pd-Cl) [19]. The polymeric complex was found to be diamagnetic, consistent with a low-spin d 8 square-planar geometry around Pd(II) [39].…”

Chemistry and materials options of sustainable carbon materials made by hydrothermal carbonization

“…35 The direct route preferred by industry can only be achieved in the vapor phase under rather harsh conditions. 36 Compared with the commercial hydrophobic charcoal-supported catalyst, the more hydrophilic HTC catalyst showed good selectivity in water towards partial hydrogenation, generating mainly cyclohexanone. A possible mechanism is that the sorption properties of phenol and cyclohexanone onto hydrothermal coal are so different that the reaction site is simply depleted of the intermediate which then can be isolated (Fig.…”

Catalytic Hydrogenation of Alkylphenols for Renewable Caprolactone

“…44,45 Among the reported studies, Pd-based catalysts have been shown to achieve high selectivity to cyclohexanone (>98 mol%). [46][47][48][49][50][51][52][53] These studies have also explored different characteristics of the support used for Pd metal particles, ranging from acid support such as alumina, basic supports such as MgO, and even carbon supports with various hydrophobicity and hydrophilicity. 28,29,31,48,54,55 However, the extent of the effect of the support on the selectivity of the phenol hydrogenation remains in discussion and is less significant relative to the operating conditions and active site composition.…”

Synthesis, characterization and catalytic activities of a reusable polymer-anchored palladium(II) complex: effective catalytic hydrogenation of various organic substrates

“…This band is shifted toward lower frequency in the complex consistent with coordination of the nitrogen to the metal atom. The polymer metal complex exhibited important IR peaks at 1620 cm -1 (m (-C=N-) stretching), 1590 cm -1 (m (-C=C-) stretching, aromatic), 720 cm -1 (orthometallation) [37], 2290 cm -1 (m (-C:N) of benzonitrile), 455 cm -1 (m (Pd-N) [38] and 355 cm -1 (m (Pd-Cl) [19]. The polymeric complex was found to be diamagnetic, consistent with a low-spin d 8 square-planar geometry around Pd(II) [39].…”

Chemistry and materials options of sustainable carbon materials made by hydrothermal carbonization

“…35 The direct route preferred by industry can only be achieved in the vapor phase under rather harsh conditions. 36 Compared with the commercial hydrophobic charcoal-supported catalyst, the more hydrophilic HTC catalyst showed good selectivity in water towards partial hydrogenation, generating mainly cyclohexanone. A possible mechanism is that the sorption properties of phenol and cyclohexanone onto hydrothermal coal are so different that the reaction site is simply depleted of the intermediate which then can be isolated (Fig.…”

Catalytic Hydrogenation of Alkylphenols for Renewable Caprolactone

“…44,45 Among the reported studies, Pd-based catalysts have been shown to achieve high selectivity to cyclohexanone (>98 mol%). [46][47][48][49][50][51][52][53] These studies have also explored different characteristics of the support used for Pd metal particles, ranging from acid support such as alumina, basic supports such as MgO, and even carbon supports with various hydrophobicity and hydrophilicity. 28,29,31,48,54,55 However, the extent of the effect of the support on the selectivity of the phenol hydrogenation remains in discussion and is less significant relative to the operating conditions and active site composition.…”