公开(公告)号：US20220306947A1

公开(公告)日：2022-09-29

申请号：US17686684

申请日：2022-03-04

Applicant: Chevron U.S.A. Inc.

Inventor： Michael Girgis ,  Stacey Ian Zones

IPC: C10G47/20 ,  C10G53/06

Abstract: Embodiments of the disclosure include processes for ring-opening of hydrocarbon species comprising aromatic and cycloparaffinic rings in hydrocarbon feeds to produce ring-opened products. In particular, the process comprises contacting hydrocarbon species comprising aromatic and cycloparaffinic rings with hydrogen in the presence of a ring-opening catalyst comprising a noble metal on a low-acidity crystalline material containing external pockets to facilitate ring-opening of the hydrocarbon species comprising aromatic and cycloparaffinic rings. The processes are useful in the transformation of polynuclear aromatic hydrocarbons (PAHs) to ring-opened products.

公开(公告)号：US20220213394A1

公开(公告)日：2022-07-07

申请号：US17528516

申请日：2021-11-17

Applicant: Chevron U.S.A. Inc.

Inventor： Michael Girgis ,  Stacey Ian Zones

IPC: C10G47/18 ,  B01J29/74

Abstract: Embodiments of the disclosure include processes for selective ring-opening of cycloparaffins in hydrocarbon feeds to produce hydrocracked cycloparaffins. In particular, the process comprises contacting a hydrocarbon feed comprising cycloparaffins with hydrogen and a catalyst comprising an unsulfided, low-acidity, metal-containing zeolite under hydrocracking conditions; wherein the metal is selected from the group consisting of platinum, nickel, rhodium and mixtures thereof. The processes are useful for upgrading petroleum streams to lubricant base stocks.