Method for preparing Ni2P catalyst
A technology of catalyst and inert gas, which is applied in the field of preparation of nickel phosphide catalyst and can solve problems such as limiting practical application
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[0026] Example 1
[0027] Take 2g NaH 2 PO 2 .H 2 O is placed in a closed reactor (such as figure 1 (Shown) outside the reaction bed, weigh the metal nickel powder with a P / Ni molar ratio of 3 and place it on the inner reaction bed of the reactor. Reactor access N 2 After venting, vacuumize again, and after repeated air changes for 3 times, the reactor is vented into normal pressure N 2 Under airtight conditions, heat up to 250°C at a rate of 5°C / min, react at a constant temperature for 1h, cool to room temperature, vacuum and pass N 2 After replacing the reaction gas with gas, the sample located in the reaction bed inside the reactor is the prepared unloaded Ni 2 P catalyst, represented by Sample1, the XRD spectrum of Sample1 is shown in figure 2 .
Example Embodiment
[0028] Example 2
[0029] Take 2g NaH 2 PO 2 .H 2 O is placed on the outer reaction bed of a closed reactor, and metal nickel powder with a P / Ni molar ratio of 2 is weighed and placed on the inner reaction bed of the reactor. The reactor was ventilated with Ar gas, and then evacuated. After repeated air changes for 3 times, the reactor was ventilated with Ar gas at normal pressure. Under airtight conditions, the reactor was heated to 300℃ at a rate of 15℃ / min, reacted at a constant temperature for 2h, and cooled to At room temperature, after evacuating and ventilating Ar gas to replace the reaction gas, the sample located in the reaction bed inside the reactor is made of unloaded Ni 2 P catalyst, represented by Sample2, the XRD spectrum of Sample2 is shown in image 3 .
Example Embodiment
[0030] Example 3
[0031] Take 2g KH 2 PO 2 .H 2 O is placed on the outer reaction bed of a closed reactor, and metal nickel powder with a P / Ni molar ratio of 4 is weighed and placed on the inner reaction bed of the reactor. The reactor was vented with He gas, and then evacuated. After repeated air changes for 3 times, the reactor was evacuated. Under airtight conditions, the reactor was heated to 150°C at a rate of 30°C / min, reacted at a constant temperature for 3 hours, cooled to room temperature, and evacuated After replacing the reaction gas with He gas, the sample located in the reaction bed inside the reactor is made of unloaded Ni 2 P catalyst, represented by Sample3, see the XRD spectrum of Sample3 Figure 4 .
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