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    Method for preparing hydrophobic molecular sieves from borosilicate and zincosilicate molecular sieves
    24.
    发明授权
    Method for preparing hydrophobic molecular sieves from borosilicate and zincosilicate molecular sieves 有权

    公开(公告)号：US11148952B1

    公开(公告)日：2021-10-19

    申请号：US17176636

    申请日：2021-02-16

    Applicant: CHEVRON U.S.A. INC.

    Inventor： Cong-Yan Chen ,  Stacey Ian Zones ,  Tracy Margaret Davis

    IPC: C01B39/02 ,  B01J37/00 ,  C01B37/00

    Abstract: A method of increasing hydrophobicity of a molecular sieve is provided. The method includes: (a) providing a metallosilicate molecular sieve having a framework consisting of oxides of silicon (Si) and a metal (M), wherein M is boron or zinc; (b) contacting the metallosilicate molecular sieve with a liquid aqueous system, thereby obtaining a demetallated molecular sieve having silanol nests and empty framework sites; and (c) thermally treating the demetallated molecular sieve, thereby obtaining a thermally-treated molecular sieve, wherein the thermally-treated molecular sieve (i) retains the three-dimensional framework structure of the metallosilicate molecular sieve and (ii) has a higher Si/M molar ratio as compared to the metallosilicate molecular sieve.

    Hydrocarbon mixture exhibiting unique branching structure
    25.
    发明授权
    Hydrocarbon mixture exhibiting unique branching structure 有权

    公开(公告)号：US11041133B2

    公开(公告)日：2021-06-22

    申请号：US16398637

    申请日：2019-04-30

    Applicant: Novvi LLC ,  Chevron U.S.A. Inc.

    Inventor： Eduardo Baralt ,  Cong-Yan Chen ,  Yalin Hao ,  Liwenny Ho ,  Willbe Ho ,  Ajit Pradhan ,  Jason Rosalli ,  Benton Thomas ,  Jason Wells

    IPC: C10M105/00 ,  C09K5/10 ,  C10N30/00 ,  C10N40/04 ,  C10N40/08 ,  C10N40/26 ,  C10N40/30 ,  C10N40/00 ,  C10N50/10

    Abstract: Provided herein are hydrocarbon mixtures with controlled structure characteristics that address the performance requirements for finished lubricants driven by the stricter environmental and fuel economy regulations. The branching characteristics of the hydrocarbon molecules are controlled to provide a composition that has a unique and superior viscosity-temperature relationship and Noack volatility. An important aspect of the present invention relates to a saturated hydrocarbon mixture with at least 80% of the molecules having an even carbon number, with the branching characteristic of BP/BI in the range≥−0.6037 (Internal alkyl branching)+2.0, where on average at least 0.3 to 1.5 of the internal methyl branches are located more than 4 carbons away from the terminal carbon when analyzed by carbon NMR. The saturated hydrocarbon mixture with such unique branching structure consistently exhibits a stand out performance in the cold crank simulated viscosity (CCS) vs Noack volatility relationship, which allows for the formulation of lower viscosity engine oils with improved fuel economies.

    Hydroconversion of renewable feedstocks
    28.
    发明授权
    Hydroconversion of renewable feedstocks 有权
    可再生原料的加氢转化

    公开(公告)号：US09266802B2

    公开(公告)日：2016-02-23

    申请号：US13708811

    申请日：2012-12-07

    Applicant: Chevron U.S.A. Inc.

    Inventor： Cong-Yan Chen ,  Alexander E. Kuperman ,  William James Cannella ,  Theodorus Ludovicus Michael Maesen

    IPC: C07C29/149 ,  C10G3/00 ,  C11C3/12 ,  C11C3/00 ,  C10G45/58 ,  C10G50/02 ,  C10G69/14

    CPC classification number: C07C29/149 ,  C10G3/46 ,  C10G3/50 ,  C10G45/58 ,  C10G50/02 ,  C10G69/14 ,  C10G2300/1022 ,  C10G2400/10 ,  C11C3/00 ,  C11C3/123 ,  Y02P30/20 ,  C07C31/125

    Abstract: A hydroconversion process comprises contacting a feedstock comprising renewable materials under hydroprocessing conditions with a promoted catalyst selected from a self-supported catalyst, a supported catalyst and combinations thereof, wherein the reaction conditions can be tailored to directly convert the renewable feedstock to the desired product(s) including fatty alcohols, esters, normal paraffins, or combinations thereof. The catalyst comprising at least a Group VIB metal selected from molybdenum and tungsten, a Group VIII metal selected from cobalt and nickel to convert the feedstock into any of fatty alcohols, esters, and normal paraffins. In some embodiments, the process further comprising additional steps to generate various desirable products, including α-olefins (or PAO, by dehydrating the fatty alcohol products), lubricants and bright stocks (from the oligomerizing of the PAO), and Group 3 lubricants (from co-oligomerizing of the PAO with some short chain olefins).

    Abstract translation: 加氢转化方法包括在加氢处理条件下将包含可再生材料的原料与选自自支撑催化剂，负载型催化剂及其组合的促进催化剂接触，其中反应条件可以被定制以将可再生原料直接转化为所需产物（ s），包括脂肪醇，酯，正链烷烃或其组合。 所述催化剂至少包含选自钼和钨的第VIB族金属，选自钴和镍的第Ⅷ族金属，以将原料转化成任何脂肪醇，酯和正链烷烃。 在一些实施方案中，该方法还包括产生各种所需产物的其它步骤，包括α-烯烃（或PAO，通过脱脂脂肪醇产物），润滑剂和光亮油料（来自PAO的低聚）和第3组润滑剂 来自PAO与一些短链烯烃的共低聚）。

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