Chinese Journal of Catalysis ›› 2021, Vol. 42 ›› Issue (3): 409-416.DOI: 10.1016/S1872-2067(20)63660-9
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Xinglin Wang, Yuanyuan Li, Zhaohui Li*()
Received:
2020-05-19
Accepted:
2020-06-25
Online:
2021-03-18
Published:
2021-01-23
Contact:
Zhaohui Li
About author:
*Tel/Fax: +86-591-22865855;E-mail:haohuili1969@yahoo.comSupported by:
Xinglin Wang, Yuanyuan Li, Zhaohui Li. Efficient visible light initiated hydrothiolations of alkenes/alkynes over Ir2S3/ZnIn2S4: Role of Ir2S3[J]. Chinese Journal of Catalysis, 2021, 42(3): 409-416.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(20)63660-9
Entry | Catalyst | Conv a (%) | Yield of 3a b (%) |
---|---|---|---|
1 | 1 mol% Ir2S3/ZnIn2S4 | 99 | 94 |
2 | 2 mol% Ir2S3/ZnIn2S4 | 91 | 85 |
3 | 0.5 mol% Ir2S3/ZnIn2S4 | 97 | 95 |
4 | ZnIn2S4 | 94 | 90 |
5 c | — | 0 | 0 |
6 d | 0.5 mol% Ir2S3/ZnIn2S4 | trace | trace |
7 f | 0.5 mol% Ir2S3/ZnIn2S4 | 5 | 5 |
Table 1 Light initiated hydrothiolation between benzyl mercaptane and phenylacetylene over Ir2S3/ZnIn2S4 under different conditions.
Entry | Catalyst | Conv a (%) | Yield of 3a b (%) |
---|---|---|---|
1 | 1 mol% Ir2S3/ZnIn2S4 | 99 | 94 |
2 | 2 mol% Ir2S3/ZnIn2S4 | 91 | 85 |
3 | 0.5 mol% Ir2S3/ZnIn2S4 | 97 | 95 |
4 | ZnIn2S4 | 94 | 90 |
5 c | — | 0 | 0 |
6 d | 0.5 mol% Ir2S3/ZnIn2S4 | trace | trace |
7 f | 0.5 mol% Ir2S3/ZnIn2S4 | 5 | 5 |
Fig.5. (a) Cycling of the hydrothiolation reaction between phenylacetylene and benzyl mercaptane over Ir2S3/ZnIn2S4 under visible light irradiation; (b) XRD patterns of (a) used Ir2S3/ZnIn2S4 after three cycling reactions (1) and fresh Ir2S3/ZnIn2S4 (2).
Fig.6. Nyquist plots of experimental impedance data for bare ZnIn2S4,Ir2S3/ZnIn2S4,MoS2/ZnIn2S4,NiS/ZnIn2S4 and Pd/ZnIn2S4 in the frequency range of 0.1-1.0×105 Hz using an ac bias of 0 V vs Ag/AgCl without visible light irradiations in an aqueous solution containing K3[Fe(CN)6] (1 mmol/L),K4[Fe(CN)6] (1 mmol/L) and KCl (0.1 mol/L).
Entry | Catalyst | Conversion a (%) | Yield b (%) | H2 (μmol) |
---|---|---|---|---|
1 | 0.5 mol% Ir2S3/ZnIn2S4 | 79 | 76 | 0.7 |
2 | 0.5 mol% MoS2/ZnIn2S4 | 55 | 54 | 13.2 |
3 | 0.5 mol% Pd/ZnIn2S4 | 60 | 59 | 1.9 |
4 | 0.5 mol% NiS/ZnIn2S4 | 41 | 39 | 3.9 |
5 | ZnIn2S4 | 58 | 56 | — |
Table 3 Light initiated hydrothiolation between phenylacetylene and 1-dodecanethiol over Ir2S3/ZnIn2S4,MoS2/ZnIn2S4,Pd/ZnIn2S4,NiS/ZnIn2S4 and bare ZnIn2S4.
Entry | Catalyst | Conversion a (%) | Yield b (%) | H2 (μmol) |
---|---|---|---|---|
1 | 0.5 mol% Ir2S3/ZnIn2S4 | 79 | 76 | 0.7 |
2 | 0.5 mol% MoS2/ZnIn2S4 | 55 | 54 | 13.2 |
3 | 0.5 mol% Pd/ZnIn2S4 | 60 | 59 | 1.9 |
4 | 0.5 mol% NiS/ZnIn2S4 | 41 | 39 | 3.9 |
5 | ZnIn2S4 | 58 | 56 | — |
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