Table 1 Results for the transformation of anisole over supported metal catalysts at different conditions.
Embedded Image
EntryCatalytic system*T
(hours)
Conversion
(%)
Selectivity (%)Yield of
1 (%)
CatalystGas123456
1Ar4.50.00.00.00.00.00.00.00.0
2Ru/SiO2Ar4.50.00.00.00.00.00.00.00.0
3Pt/SiO2Ar4.50.00.00.00.00.00.00.00.0
4Pd/SiO2Ar4.50.00.00.00.00.00.00.00.0
5Ni/SiO2Ar4.50.00.00.00.00.00.00.00.0
6RuW/SiO2Ar4.596.6>99.90.00.00.00.00.096.5
7§RuW/SiO2Ar5.0100>99.90.00.00.00.00.0>99.9
8PtW/SiO2Ar4.528.880.20.019.80.00.00.023.1
9PdW/SiO2Ar4.520.573.70.017.09.30.00.015.1
10NiW/SiO2Ar4.50.00.00.00.00.00.00.00.0
11||Ru-W/SiO2Ar5.09.8>99.90.00.00.00.00.09.8
12RuW/SiO2H24.596.578.821.20.00.00.00.076.0
13PtW/SiO2H24.596.811.831.20.03.219.534.311.8
14NiW/SiO2H24.525.631.818.20.09.115.525.48.1
15PdW/SiO2H24.597.00.067.70.00.521.110.70.0
16Ru/SiO2H21.095.90.042.00.00.04.653.40.0
17W/SiO2Ar4.50.00.00.00.00.00.00.00.0
18W/SiO2H24.50.00.00.00.00.00.00.00.0

*Reaction results are the averages of three experiments conducted in parallel. Anisole (1.0 mmol), H2O (5.0 ml), 175°C, 0.5 MPa Ar, or 1.0 MPa H2, 800 rpm.

†Ru/SiO2 (3.5 wt %), Pt/SiO2, Pd/SiO2, Ni/SiO2, 20 wt % W/SiO2 (the content of metal is based on SiO2 and determined by ICP); RuW/SiO2, PtW/SiO2, PdW/SiO2, NiW/SiO2 (3.5 wt % Ru, Pt, Pd, and Ni metals, 20 wt % W, the content of metal is based on SiO2 and determined by ICP).

‡Without catalyst, or only SiO2 was used.

§Turnover number (TON) = 38; TON is expressed in mole of anisole converted per mole of ruthenium.

 ||Mechanical mixture of Ru/SiO2 (3.5 wt % Ru) and W/SiO2 (20 wt % W) catalysts is denoted as Ru-W/SiO2 catalyst.