Production of benzene, toluene, and xylene (BTX) from FCC naphtha
    21.
    发明授权
    Production of benzene, toluene, and xylene (BTX) from FCC naphtha 失效
    从FCC石脑油生产苯,甲苯和二甲苯(BTX)

    公开(公告)号:US5685972A

    公开(公告)日:1997-11-11

    申请号:US502733

    申请日:1995-07-14

    CPC分类号: C10G69/08 Y02P20/52

    摘要: Cracked naphtha feeds such as FCC naphtha and coker naphtha are upgraded to produce chemical grade BTX (benzene, toluene, xylene with ethylbenzene) while co-producing a low sulfur gasoline of relatively high octane number. The cracked, sulfur-containing naphtha is processed by hydrodesulfurization followed by treatment over an acidic catalyst, preferably a zeolite such as ZSM-5 or zeolite beta with a hydrogenation component, preferably molybdenum. The treatment over the acidic catalyst in the second step restores the octane loss which takes place as a result of the hydrogenative treatment and results in a low sulfur gasoline product to permit a low sulfur gasoline of blending quality to be obtained with the BTX. The BTX can be extracted from the second stage effluent, preferably from a C.sub.6 -C.sub.8 fraction of this effluent.

    摘要翻译: 裂化石脑油原料如FCC石脑油和焦化石脑油被升级,以生产具有相对较高辛烷值的低硫汽油的化学级BTX(苯,甲苯,二甲苯与乙苯)。 裂解的含硫石脑油通过加氢脱硫然后在酸性催化剂,优选沸石如ZSM-5或β沸石上用氢化组分,优选钼处理。 在第二步骤中对酸性催化剂的处理恢复了由于氢化处理而发生的辛烷值损失,并导致低硫汽油产物,以允许用BTX获得混合质量的低硫汽油。 BTX可以从第二阶段流出物中提取,优选从该流出物的C6-C8馏分中提取。

    Synthesis of pyridine and 3-alkylpyridine
    22.
    发明授权
    Synthesis of pyridine and 3-alkylpyridine 失效
    吡啶和3-烷基吡啶的合成

    公开(公告)号:US5395940A

    公开(公告)日:1995-03-07

    申请号:US73213

    申请日:1993-06-07

    CPC分类号: C07D213/08 C07D213/10

    摘要: An improved process is provided for selectively synthesizing pyridine and 3-alkylpyridine in high yield by reacting ammonia and a carbonyl reactant selected from the group consisting of formaldehyde, an aldehyde containing from 2 to 4 carbon atoms, a ketone containing from 3 to 5 carbon atoms, and mixtures thereof under effective conditions in the presence of a catalyst comprising an active form of a synthetic porous crystalline MCM-49 or synthetic porous crystalline material characterized by an X-ray diffraction pattern including interplanar d-spacings at 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, and 3.42.+-.0.06 Angstroms, e.g., MCM-22, and recovering from the resulting reaction mixture a product enriched in pyridine and 3-alkylpyridine.

    摘要翻译: 提供了一种改进的方法,用于通过使氨和选自甲醛,含有2至4个碳原子的醛,含3至5个碳原子的酮的羰基反应物选择性合成吡咯和3-烷基吡啶 ,以及它们在有效条件下的存在下的混合物,所述催化剂包含活性形式的合成多孔结晶MCM-49或合成多孔结晶材料,其特征在于包括在12.36 +/- 0.4的面间d-间距的X射线衍射图, 11.03 +/- 0.2,8.33 +/- 0.14,6.18 +/- 0.12,6.00 +/- 0.10,4.06 +/- 0.07,3.91 +/- 0.07和3.42 +/- 0.06埃,例如MCM-22, 并从所得反应混合物中回收富含吡啶和3-烷基吡啶的产物。

    Process for preparing dialkylnaphthalene
    23.
    发明授权
    Process for preparing dialkylnaphthalene 失效
    制备二烷基萘的方法

    公开(公告)号:US5001295A

    公开(公告)日:1991-03-19

    申请号:US494203

    申请日:1990-03-15

    IPC分类号: B01J29/04 C07C2/12

    摘要: A catalytic process is provided for the preparation of dialkylnaphthalenes by alkylating a 2-alkylnaphthalene with an alkylating agent having an aliphatic group of from one to five carbon atoms, such as methanol. The catalyst comprises a synthetic zeolite characterized by an X-ray diffraction pattern including interplanar d-spacings at 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 and 3.42.+-.0.06 Angstroms.

    摘要翻译: 提供了通过用具有1至5个碳原子的脂族基团如甲醇的烷基化烷基化2-烷基萘来制备二烷基萘的催化方法。 该催化剂包括合成沸石,其特征在于X射线衍射图包括在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和3.42 +/- 0.06埃。