催化剂的性能测试和表征数据

The test laser wavelength was 532 nm and the scanning range was 200-1200 cm-1.The H2-TPR was performed on a Microtrac BELCat II programmed-temperature chemisorption analyser (Japan). The sample was weighed and placed in a reaction tube, then programmed from room temperature to 200 ℃ at a temperature of 10 ℃/min for drying and pretreatment, and purged by a He gas stream (30-50 mL/min) for 1 h. The sample was cooled to 50 ℃, and then introduced into a 10% H2/Ar mixture (30-50 mL/min) for 1 h to saturation, and the sample was desorbed in the 10% H2/Ar gas stream at an elevated rate of 10 ℃/min to 700 ℃. /The sample was desorbed in 10% H2/Ar airflow at a temperature increase rate of 10 ℃/min to 700 ℃, and the reducing gas was detected by TCD.CO-TPD was analysed using a Microtrac BELCat II programmable temperature-raising chemisorption analyser.

A certain amount of sample was weighed and placed in a reaction tube, and the sample was programmed to be heated up from room temperature to 200 ℃ at 10 ℃/min for drying and pre-treatment, and then purged by He gas flow (30-50 mL/min) for 1h, then cooled down to 50 ℃, and then the sample was fed into the mixture of CO/He (30-50 mL/min) for 1h to saturation, and then switched to He gas flow (30-50 mL/min) for 1h to remove the weakly physisorbed CO.

The sample was cooled to 50 ℃, fed with CO/He mixture (30-50 mL/min) for 1h to saturation, switched to He gas flow (30-50 mL/min) for 1h to remove the weakly adsorbed CO on the surface, and then finally desorbed at 700 ℃ under He atmosphere at a heating rate of 10 ℃/min, and the desorbed gases were detected by TCD.