Catalyst for the hydrodealkylation of alkylaromatic compounds
    42.
    发明授权
    Catalyst for the hydrodealkylation of alkylaromatic compounds 失效
    用于烷基芳族化合物加氢脱烷基化的催化剂

    公开(公告)号:US4451687A

    公开(公告)日:1984-05-29

    申请号:US540214

    申请日:1983-10-07

    摘要: An alkylaromatic hydrocarbon feed stream is hydrodealkylate in the presence of a catalyst having a reduced rate of deactivation, or a lower coking tendency. The catalyst comprises a gamma-alumina support containing 8 to 12 wt. % Cr.sub.2 O.sub.3 and 0.2 to 0.7 wt. % Na.sub.2 O and having a surface area from 175 to 275 m.sup.2 /g and a pore volume from 0.5 to 1.2 cc/g. The catalyst is also useful in the hydrodesulfurization of thiophene containing hydrocarbon streams.

    摘要翻译: 在具有降低的失活速率或较低焦化倾向的催化剂存在下,烷基芳族烃进料流是加氢脱烷基化物。 催化剂包含含有8-12重量%的γ-氧化铝载体。 %Cr 2 O 3和0.2〜0.7重量% %Na 2 O,表面积为175〜275m 2 / g,孔体积为0.5〜1.2cc / g。 催化剂也可用于含噻吩烃流的加氢脱硫。

    Catalytic steam dealkylation of alkyl phenols
    43.
    发明授权
    Catalytic steam dealkylation of alkyl phenols 失效
    烷基酚的催化蒸汽脱烷基化

    公开(公告)号:US4230896A

    公开(公告)日:1980-10-28

    申请号:US964814

    申请日:1978-11-30

    申请人: Francis P. Daly

    发明人: Francis P. Daly

    IPC分类号: C07C37/50

    CPC分类号: C07C37/50

    摘要: This invention provides a method for the selective dealkylation of alkylated phenols, which method comprises reacting a feed solution comprising a mixture of alkylated phenols with steam in the presence of a catalyst comprising a hydrous carrier, at least one catalyst deactivation suppressor, and at least one promoter. A salt of an alkali metal may be added to the feed to enhance the selectivity of phenol in the product.

    摘要翻译: 本发明提供了烷基化酚的选择性脱烷基化的方法,该方法包括在包含含水载体,至少一种催化剂失活抑制剂和至少一种催化剂的催化剂的存在下使包含烷基化酚与蒸汽的混合物的进料溶液反应 启动子。 可以向进料中加入碱金属盐以提高产物中苯酚的选择性。

    Catalyst for the synthesis of chlorine dioxide
    44.
    发明授权
    Catalyst for the synthesis of chlorine dioxide 失效
    用于合成二氧化氯的催化剂

    公开(公告)号:US5435984A

    公开(公告)日:1995-07-25

    申请号:US8971

    申请日:1993-01-26

    摘要: Chlorine dioxide is generated from an aqueous solution of sodium chlorite in the presence of a catalyst having a higher activity and a reduced rate of deactivation. The catalyst is preferably a Pd/Al.sub.2 O.sub.3 of palladium and another platinum group metal (e.g., Pd+Pt/Al.sub.2 O.sub.3) or palladium and a Group IB metal (e.g., Pd+Au/Al.sub.2 O.sub.3) catalyst containing La.sub.2 O.sub.3 and Nd.sub.2 O.sub.3.

    摘要翻译: 在具有较高活性和降低失活速率的催化剂存在下,从亚氯酸钠水溶液中产生二氧化氯。 该催化剂优选为钯和另一种铂族金属(例如Pd + Pt / Al 2 O 3)或钯和含有La 2 O 3和Nd 2 O 3的IB族金属(例如Pd + Au / Al 2 O 3)催化剂的Pd / Al 2 O 3。

    Thermal hydrodealkylation of alkyl phenols
    48.
    发明授权
    Thermal hydrodealkylation of alkyl phenols 失效
    烷基酚的热加氢脱烷基化

    公开(公告)号:US4230895A

    公开(公告)日:1980-10-28

    申请号:US964813

    申请日:1978-11-30

    申请人: Francis P. Daly

    发明人: Francis P. Daly

    IPC分类号: C07C37/50

    CPC分类号: C07C37/50

    摘要: The present invention provides a process, for the thermal dealkylation of alkylated phenols, which process comprises reacting a feed solution containing alkylated phenols and gaseous hydrogen in the presence of water vapor, the reaction being carried out at total pressure of 400 to 800 psig, temperature ranging from about 1000 .degree. to about 1500.degree. F., and the weight percent water vapor in the reaction being from about 10 to about 40 Wt % of the alkylated phenol feedstock.

    摘要翻译: 本发明提供了一种用于烷基化酚的热脱烷基化的方法,该方法包括在水蒸气存在下使包含烷基化酚和气态氢的进料溶液反应,反应在总压为400至800psig,温度 在约1000℃至约1500°F的范围内,并且反应中水蒸汽的重量百分比为烷基化苯酚原料的约10至约40重量%。