Selective hydrogenation of acetone to methyl isobutyl ketone (MIBK) over co-precipitated Ni/Al2O3 catalysts

Industrially benign super-compressible piezoresistive carbon foams with predefined wetting properties: from environmental to electrical applications

“…At higher reaction temperatures (250°C), as shown in Fig. 3(d), however, the formation of MIBK is also favored (selectivity of 11%), indicating that the carbon-supported Ni catalyst is also active in promoting aldol condensation22232425 (Figure 4), which is usually performed over catalyst metals supported on zeolites22, talcite23 and alumina24. Since the reaction requires the presence of metal catalysts as well as acid or basic surface sites on the support, the basic pyridinic (peak at 398.1 eV) and quaternary nitrogen (peaks at 401.0 and 402.5 eV) (Table S1) functionalities on the surface of the carbon foam can act as catalytic sites promoting the aldol reaction similar to N-doped carbon nanotubes used in Knoevenagel condensation26.…”

Layered double hydroxides: precursors for multifunctional catalysts

“…This process generates large amounts of wastes and there was a great incentive to implement a more eco-friendly process based on heterogeneous catalysis. Several industrial processes [9][10][11][12], as well as academic studies [13][14][15][16][17][18][19][20][21][22][23][24][25][26], spanning a wide variety of multifunctional solid catalysts, were thus reported. Some of those dealt with bifunctional acid/metal catalysts [13][14][15][16], and others with multifunctional base/acid/ metal catalysts [17][18][19][20][21][22][23][24][25][26].…”

“…Several industrial processes [9][10][11][12], as well as academic studies [13][14][15][16][17][18][19][20][21][22][23][24][25][26], spanning a wide variety of multifunctional solid catalysts, were thus reported. Some of those dealt with bifunctional acid/metal catalysts [13][14][15][16], and others with multifunctional base/acid/ metal catalysts [17][18][19][20][21][22][23][24][25][26]. Most promising materials may belong to the latter category exhibiting very different acid-base and hydrogenating properties, such as MgOsupported Ni, Pd and Cu [17][18][19], Pd on ALPO and SAPO [20], Pt supported on the basic CsX zeolite [21], and Pd, Ni and Cu-based catalysts derived from LDH precursors [22][23][24][25][26].…”

One-step synthesis of methyl isobutyl ketone from acetone over Pd/MCM-22 zeolites

“…These multiple-functional catalysts can act by shifting the equilibrium in the condensation step in favor of MO by simultaneous and irreversible hydrogenation it to MIBK. In the past two decades, many works have been reported on one-step synthesis of MIBK from acetone over metal supported catalysts, such as Pd/resin [10], Pd/hydrotalcites [11], Ni/MgO [12], Pd/Niobic acid [13], Pd/HMFI [14], Cu/MgO [15], Ni/ALPON [16], Na/Pd/MgO [17], Pt/HZSM-5 [18], Ni/Al 2 O 3 [19], Pd/MCM-56 [20], and Pd/(Nb 2 O 5 /SiO 2 ) [21].…”