Abstract: A method includes presenting a virtual network configuration interface to a user; receiving an attribute that is of a target virtual network in a public cloud and that is configured by the user via the virtual network configuration interface, where the target virtual network is a virtual network used to bear a target service; and providing the attribute of the target virtual network to a target node in the public cloud, where the attribute of the target virtual network is used by the target node to join the target virtual network.

Abstract: A modified ? zeolite has 0.5-15 wt % of an IVB group metal element in terms of oxide on the dry basis weight of the modified ? zeolite. The number of medium strong acid centers of the modified ? zeolite accounts for 30-60% of the total acid amount, the number of strong acid centers accounts for 5-25% of the total acid amount, and the ratio of B acid to L acid is 0.8 or more. The ratio of the weight content of the IVB group metal element in the modified ? zeolite body phase to the weight content of the IVB group metal element on the surface is 0.1-0.8. The catalytic cracking catalyst containing the modified ? zeolite has good selectivity and yield of C4 olefin.

Abstract: A catalytic cracking catalyst contains 15-50 wt. % of beta zeolite, 10-75 wt. % of clay, and 10-50 wt. % of large-particle-size sol. Its total pore volume is not less than 0.200 mL/g of which more than 60% is attributed to 4-50 nm mesopores. The large-particle-size sol has 10-40 wt. % of Al2O3, 50-85 wt. % of P2O5, and 0.2-10 wt. % of SiO2, and an average particle size of 20 to 50 nm. To prepare the catalyst, an aluminum source and deionized water are mixed to obtain a first slurry; the first slurry and a phosphorus source are mixed to obtain a second slurry; a silica sol is added into the second slurry to obtain a third slurry; the third slurry is subjected to aging treatment to obtain a large-particle-size sol, and the large-particle-size sol is mixed uniformly with clay and beta zeolite to obtain a fourth slurry, which is spray dried and calcined.

Abstract: The catalytic cracking catalyst contains a molecular sieve and an alumina substrate material. The alumina substrate material has a crystalline phase structure of ?-alumina. Based on the volume of pores with a diameter of 2-100 nm, the pore volume of the pores with a diameter of 2-5 nm accounts for 0-10%, the pore volume of the pores with a diameter of more than 5 nm and not more than 10 nm accounts for 10-25%, and the pore volume of the pores with a diameter of more than 10 nm and not more than 100 nm accounts for 65-90%.

Abstract: A catalytic cracking additive, its preparation and application thereof are provided. The catalytic cracking additive contains 10-50 wt % of a modified ? zeolite, 20-85 wt % of a clay and 5-35 wt % of a boron-containing binder, based on the total weight of the catalytic cracking additive. The modified ? zeolite comprises 0.1-1 wt % of CuO and 1-15 wt % of P2O5, and has a micro-activity index of at least 58; the boron-containing binder comprises 70-97 wt % of Al2O3 and 3-30 wt % of B2O3, and has a pH value of 1.0-3.5. The catalytic cracking additive can significantly improve the yield of C4 olefins and the concentration of C4 olefins in liquefied gas.

Abstract: A modified ? zeolite has 0.5-15 wt % of an IVB group metal element in terms of oxide on the dry basis weight of the modified ? zeolite. The number of medium strong acid centers of the modified ? zeolite accounts for 30-60% of the total acid amount, the number of strong acid centers accounts for 5-25% of the total acid amount, and the ratio of B acid to L acid is 0.8 or more. The ratio of the weight content of the IVB group metal element in the modified ? zeolite body phase to the weight content of the IVB group metal element on the surface is 0.1-0.8. The catalytic cracking catalyst containing the modified ? zeolite has good selectivity and yield of C4 olefin.

Abstract: The catalytic cracking catalyst contains a molecular sieve and an alumina substrate material. The alumina substrate material has a crystalline phase structure of ?-alumina. Based on the volume of pores with a diameter of 2-100 nm, the pore volume of the pores with a diameter of 2-5 nm accounts for 0-10%, the pore volume of the pores with a diameter of more than 5 nm and not more than 10 nm accounts for 10-25%, and the pore volume of the pores with a diameter of more than 10 nm and not more than 100 nm accounts for 65-90%.

Abstract: The present invention relates to a metal modified Y zeolite, its preparation and use. Said zeolite contains 1-15 wt % of IVB group metal as oxide and is characterized in that the ratio of the zeolite surface's IVB group metal content to the zeolite interior's IVB group metal content is not higher than 0.2; and/or the ratio of the distorted tetrahedral-coordinated framework aluminum to the tetrahedral-coordinated framework aluminum in the zeolite lattice structure is (0.1-0.8):1.

Abstract: The present invention relates to a metal modified Y zeolite, its preparation and use. Said zeolite contains 1-15 wt % of IVB group metal as oxide and is characterized in that the ratio of the zeolite surface's IVB group metal content to the zeolite interior's IVB group metal content is not higher than 0.2; and/or the ratio of the distorted tetrahedral-coordinated framework aluminum to the tetrahedral-coordinated framework aluminum in the zeolite lattice structure is (0.1-0.8):1.

Abstract: The present invention relates to a metal modified Y zeolite, its preparation and use. Said zeolite contains 1-15 wt % of IVB group metal as oxide and is characterized in that the ratio of the zeolite surface's IVB group metal content to the zeolite interior's IVB group metal content is not higher than 0.2; and/or the ratio of the distorted tetrahedral-coordinated framework aluminum to the tetrahedral-coordinated framework aluminum in the zeolite lattice structure is (0.1-0.8):1.

Abstract: The present invention relates to a metal modified Y zeolite, its preparation and use. Said zeolite contains 1-15 wt % of IVB group metal as oxide and is characterized in that the ratio of the zeolite surface's IVB group metal content to the zeolite interior's IVB group metal content is not higher than 0.2; and/or the ratio of the distorted tetrahedral-coordinated framework aluminum to the tetrahedral-coordinated framework aluminum in the zeolite lattice structure is (0.1-0.8):1.