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Table 4 Results for recycling of activated Cu@A-HCS catalysts activated with KOH

From: Fabrication of Yolk-Shell Cu@C Nanocomposites as High-Performance Catalysts in Oxidative Carbonylation of Methanol to Dimethyl Carbonate

No.

Catalysts

Wcatalyst a

(g)

CCu b

(mmol/L)

SDMC

(%)

CMeOH

(%)

TOF

(h−1)

1

A-HCS

0.8700

2

Cu@A-HCS

0.8672

150

91.2

17.1

8.6

3

Removed from no.2

0.8551

148

91.3

17.3

8.8

4

Removed from no.3

0.8436

146

90.8

17.2

8.8

5

Removed from no.4

0.8263

143

91.4

17.1

9.0

6

Removed from no.5

0.8147

141

91.3

17.0

9.1

7

Removed from no.6

0.7974

138

91.1

17.0

9.2

8

Removed from no.7

0.7827

136

91.5

16.9

9.4

  1. Reaction conditions: T = 120 °C, initial pressure = 3.0 MPa (PCO:PO2 = 2:1), t = 120 min, stirring speed = 750 rpm, VMeOH = 10 mL
  2. aThe weight of catalyst
  3. bThe concentration of copper in the slurry system

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