Back to results
US 12,673,318 B2Granted
1,3-butadiene synthesis catalyst, method for producing same, and method for producing 1,3-butadiene
AssigneeToyo Tire Corporation
InventorsNorihiko Nakamura, Noritatsu Tsubaki, Guohui Yang
Life of this patent
Estimating the term…
Abstract
A catalyst according to an embodiment is a catalyst for synthesizing 1,3-butadiene from ethanol. The catalyst contains a porous silica support made of crystalline silica, Zn, and Zr, and has a multimodal pore size distribution with a peak pore size (Dmicro) of 2 nm or less and a peak pore size (Dmeso+macro) of more than 2 nm.
Claims13
A catalyst for 1,3-butadiene synthesis for synthesizing 1,3-butadiene from ethanol, comprising a porous silica support made of crystalline silica, Zn, and Zr,
- the catalyst having a multimodal pore size distribution with a first peak pore size (Dmicro) of 2 nm or less and a second peak pore size (Dmeso+macro) of more than 2 nm,
- wherein the multimodal pore size distribution refers to a distribution of pore diameters determined from nitrogen adsorption/desorption measurements, and
- wherein at least part of the Zr is bonded to silanol groups on a surface of the silica support within pores thereof, such that the Zr does not substitute for silicon atoms in a framework structure of the silica support.
Dependencies are inferred from the claim text.