[This patent text was translated from Chinese to English and published about 10 years ago. Critical information has been modified before being posted here]
[71] Patent Owner: Qilu Petrochemical Corporation of Sinopec Group
Address: P.O. 124, Zhibo City, Shangdong, P.R.China 255408
[72] Inventors: Zhou Guanglin, Zhou Hongjun, Kong Haiyan, Fu Yuansheng, Feng Bing.
Examinator: Li Xuexia
[54] Title of the Invention: A Type of Protecting Agent for the Methanol synthesis catalyst and Its Preparation Method.
[57] Abstract
A type of protecting agent for the methanol synthesis catalyst, which is composed of: (1) the oxides of one or several types of metals (selected from any of the Mo, Cu or Cr), as the main metal constituent; and (2) at least one type of metal of IIA subgroup, as the auxiliary metal constituent. These metal constituents are carried on the γ-Al2O3 carriers. The preparation processes of the protecting agent of aforementioned composition include: impregnation, drying and baking. This protecting agent can be used to remove the Fe(CO)5 and Ni(CO)4 in the synthesis gas, thus to protect the methanol synthesis catalyst and to prolong its service life.
- A type of protecting agent for methanol synthesis catalyst consisting of the carriers, main metal constituents and auxiliary metal constituents, which features that: the carrier isγ-Al2O3, the main metal constituents are the oxides of one or several types of metals (selected from any of the Mo, Cu or Cr), and the auxiliary metal constituent is the oxide of at least one type of metal of IIA subgroup. To the total weight of the protecting agent, the content of the main metal constituent in the agent is 0.8~10%, and the content of the auxiliary metal constituent is also 0.8~10%.
- A type of protecting agent according to Claim 1, in which the carrier features that:
The globular diameter is 2-6 mm;
The pore capacity is 0.45~0.65ml/g;
The specific surface is 150~350m2/g;
The mechanical robustness ≥70N/ globule
- A type of protecting agent according to Claim 1, which features that its main metal constituent is the oxide of Cu;
- A type of protecting agent according to Claim 1, which features that its auxiliary metal constituents are oxides of Mg, Ca or Ba;
- A method for preparation of the protecting agent described in Claim 1, which consists of the processes of impregnation, drying and baking. This preparation method features that: the metal salt concentration in the impregnation solution is 2~40wt%, the drying temperature is 100~400℃, and the baking temperature is 300~650℃.
- A preparation method according to Claim 5, which features that the metal salt concentration in the impregnation solution is 5~35wt%, the drying temperature is 120~350℃, and the baking temperature is 350~550℃.
- A preparation method according to Claim 5, which features that the metal salt in the impregnation solution is any (or any combination) of nitrate, acetate, citrate or lactate.
- A preparation method according to Claim 5, which features that said impregnation is an isometric impregnation process.
[This patent text was translated from Chinese to English and published about 10 years ago. Critical information has been modified before being posted here]