摘要:
The present invention has for its object to provide a novel catalyst by use of which methylbenzenes can be oxidized in gaseous phase in the presence of molecular oxygen to give the corresponding aromatic aldehydes and has a composition of the following general formula (1) :
WaXbYcOx (1)
wherein W represents a tungsten atom; X represents at least one kind of element selected from the group consisting of P, Sb, Bi and Si; Y represents at least one element selected from the group consisting of Fe, Co, Ni, Mn, Re, Cr, V, Nb, Ti, Zr, Zn, Cd, Y, La, Ce, B, Al, Tl, Sn, Mg, Ca, Sr, Ba, Li, Na, K, Rb and Cs; O represents an oxygen atom; a, b, c and x represent the numbers of atoms of W, X, Y and O, respectively; provided, however, the proportions of a, b and c are such that when a=12, b=0.5 to 10 and c=0 to 15; X represents a numerical value which is determined by the oxidized states of the elements other than oxygen.
摘要翻译:本发明的目的是提供通过使用哪methylbenzenes的新型催化剂可以在气相中在分子氧,得到相应的芳族醛存在被氧化,并且具有以下通式(1)的组合物:WaXbYcOx worin W¯¯darstellt一个钨原子; X darstellt至少一种选自P,锑,铋和Si的选定元素的; 选自铁,钴,镍,锰,RE,铬,钒,铌,钛,锆,锌,镉,Y,镧,铈,硼,铝,铊,锡的选中的Y darstellt的至少一种元素, 镁,钙,锶,钡,锂,钠,K,Rb和Cs; Òdarstellt到氧原子; 的a,b,c和x分别表示W,X,分别Y和O,的原子数; 提供,但是,的比例,b和c被检查并当a = 12时,b = 0.5〜10,c = 0到15; X darstellt的数值的所有其确定性由氧以外的元素的氧化态开采。
摘要:
A catalyst of formula (1):Mn α E 1 β E 2 γ O x wherein E 1 is at least one element selected from P, As, Sb, B, S, Se, Te, F, Cl, Br, I, Nb, Ta, W, Re and Cu; E 2 is at least one element selected from Cr, Fe, Co, Ni, Ag, Au, Zn, Tl, Sn, Pb, Bi, Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Y, La, Ce, Nd and Sm; α = 1, β = 0.01-10, γ = 0-5, and x is a numerical value determined by the oxidation states of the elements other than oxygen.
摘要:
The present invention provides a process for producing a superconducting material capable of elevating the Tc of oxide superconductors, in paticular Bi-based superconductors. The feature of the present invention resides in a process for producing an oxide superconductor, in which a intermediate product or a product showing superconducting property is treated with a solution containing a compound having a reducing or oxdising function. As the compound having a reducing function, compounds having two or more enolic hydroxy groups, cycloaliphatic polyhydric alcohol compounds or inorganic type reducing compounds are preferred. As the compound having oxidizing function, there can be mentioned, for example, carbonyl compounds, ozone, hydrogen peroxide, organic peroxide, dimethylsulfoxide and permanganate.