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    • 2. 发明授权
    • Process for preparing dialkylnaphthalene
    • 制备二烷基萘的方法
    • US6011190A
    • 2000-01-04
    • US887052
    • 1997-07-02
    • Masahiro MotoyukiKoji YamamotoAjit Vishwanath SapreJohn Paul McWilliams
    • Masahiro MotoyukiKoji YamamotoAjit Vishwanath SapreJohn Paul McWilliams
    • B01J29/04C07B61/00C07C2/66C07C6/12C07C15/24C07C1/01C07C2/64C07C2/68C07C5/22
    • C07C15/24C07C2/66C07C6/126C07C2529/70
    • 2,6-Dialkylnaphthalene is prepared from a feedstock comprising naphthalene and an alkylating agent, by a process comprising the steps:(I) transalkylating isomers of dialkylnaphthalene and naphthalene to produce monoalkylnaphthalene and isomers of dialkylnaphthalene;(II) separating the product obtained in step (I) into naphthalene, monoalkylnaphthalene, dialkylnaphthalene and other components;(III) alkylating the monoalkylnaphthalene fraction from step (II) with an alkylating agent to produce dialkylnaphthalene; and(IV) separating 2,6-dialkylnaphthalene from the dialkylnaphthalene fraction in step (II),wherein at least step (I) or step (III) is conducted in the presence of a catalyst having a composition comprising a synthetic zeolite having an X-ray diffraction pattern with an interplanar d-spacing (.ANG.)______________________________________ 12.36 .+-. 0.4 11.03 .+-. 0.2 8.83 .+-. 0.14 6.18 .+-. 0.12 6.00 .+-. 0.10 4.06 .+-. 0.07 3.91 .+-. 0.07 3.42 .+-. 0.06. ______________________________________
    • 2,6-二烷基萘由包含萘和烷基化剂的原料制备,通过包括以下步骤的方法制备:(I)将烷基萘和萘的异构体转烷基化以产生单烷基萘和二烷基萘的异构体; (II)将步骤(I)中获得的产物分离成萘,单烷基萘,二烷基萘等组分; (III)用烷基化剂烷基化来自步骤(II)的单烷基萘馏分以制备二烷基萘; 和(IV)在步骤(II)中从二烷基萘馏分中分离2,6-二烷基萘,其中至少步骤(I)或步骤(III)在具有包含具有X 具有面间d间距(ANGSTROM)的-ray衍射图 - 12.36 +/- 0.4-11.03 +/- 0.2-8.83 +/- 0.14-6.18 +/- 0.12- 6.00 +/- 0.10-4.06 +/- 0.07- 3.91 +/- 0.07 - 3.42 +/- 0.06。 -
    • 10. 发明授权
    • Method for concentrating 2,6-dimethylnaphthalene
    • 浓缩2,6-二甲基萘的方法
    • US06706939B2
    • 2004-03-16
    • US10193228
    • 2002-07-12
    • Noboru NakaoKoji YamamotoMasahiro Motoyuki
    • Noboru NakaoKoji YamamotoMasahiro Motoyuki
    • C07C712
    • C07C7/13C07C15/24
    • A method for concentrating 2,6-dimethylnaphthalene in a dimethylnaphthalene isomer mixture includes supplying the dimethylnaphthalene isomer mixture to an adsorption column packed with Y-type zeolite. In this instance, by setting the value derived from the expression (u1/3/&egr;)d−5/3 at 14 (m5/3 s−1/3 kg−1) or more, the concentration ratio of 2,6-dimethylnaphthalene to 2,7-dimethylnaphthalene can be 2.0 or more. u here represents the linear velocity (m/s) of the dimethylnaphthalene isomer mixture supplied to an adsorption column, &egr; represents the packing density (kg/m3) of Y-type zeolite, and d represents the grain size (m) of the Y-type zeolite.
    • 将2,6-二甲基萘浓缩在二甲基萘异构体混合物中的方法包括将二甲基萘异构体混合物供应到填充有Y型沸石的吸附塔上。 在这种情况下,通过在14(m <5/3> s <-1 / 3> kg -1)处设定从表达式(u <1/3 /ε)d <-5/3>导出的值 )以上时,2,6-二甲基萘与2,7-二甲基萘的浓度比可以为2.0以上。 这里表示供给吸附塔的二甲基萘异构体混合物的线速度(m / s),ε表示Y型沸石的填充密度(kg / m 3),d表示粒径(μm) 的Y型沸石。