UOP 924-00 PDF

Full title and description

St UOP 924-00 — "Nickel, Tungsten, Sodium and Aluminum in Hydrocracking Catalysts by ICP‑AES". Method for determination of Ni, W, Na and Al in fresh alumina or alumino‑silicate supported hydrocracking catalysts using inductively coupled plasma atomic emission spectroscopy (ICP‑AES). The procedure covers sample decomposition, calibration, measurement and reporting practices for concentrations ranging from low ppm up to high mass percent.

Abstract

UOP 924‑00 specifies an ICP‑AES analytical procedure to determine nickel, tungsten, sodium and aluminum in hydrocracking catalysts. The method describes sample dissolution and preparation, instrument settings, calibration and quality control measures, and notes limitations for catalysts containing refractory alumina phases unless modified dissolution techniques are used. The method may be adapted for spent catalysts after appropriate pretreatment.

General information

• Status: Active standard (designated UOP 924‑00).
• Publication date: 29 July 2002 (designation UOP 924‑00).
• Publisher: Universal Oil Products (UOP).
• ICS / categories: 71.040.50 (Catalysts — analytical methods / petrochemical industry test methods).
• Edition / version: Designation UOP 924‑00 (method issued as the “‑00” version; last catalog update shows active status as of 29 July 2002).
• Number of pages: 8 pages.

Scope

This method is intended for determining Ni, W, Na and Al in fresh alumina or alumino‑silicate supported hydrocracking catalysts by ICP‑AES. It is suitable across a wide concentration range (low ppm to high mass percent). The method notes that catalysts containing alpha‑ or theta‑alumina phases may not dissolve completely using the described decomposition; in such cases a modified dissolution (for example, Teflon‑lined pressure vessel fusion) is required and is not covered in detail in the method. With appropriate pretreatment, the procedure can also be applied to spent catalysts.

Key topics and requirements

• Sample decomposition and dissolution procedures compatible with alumina or alumino‑silicate supports.
• ICP‑AES instrument settings, calibration, and multi‑element measurement strategies for Ni, W, Na and Al.
• Concentration range handling: From low ppm up to high mass‑percent concentrations.
• Limitations and special procedures for catalysts containing refractory alumina phases (alpha, theta) — alternative dissolution techniques may be necessary.
• Quality control practices: use of blanks, standards, recovery checks and instrument performance verification appropriate for catalyst matrices.
• Notes on applicability to spent catalysts after suitable pretreatment to remove matrix interferences.

Typical use and users

Used by catalyst manufacturers, refinery laboratories, analytical service providers and research groups for routine quality control, incoming inspection of catalyst batches, failure/root‑cause investigations, and research into catalyst formulation. Typical users are analytical chemists, process technologists and QC personnel working in petroleum refining and petrochemical catalyst production.

Related standards

Closely related UOP methods cover other elemental determinations and catalyst analyses (for example UOP 925 series for other metals, UOP 926 for aluminum/silicon determination by fusion/ICP‑AES, and UOP 303/714 for broader ICP‑OES/ICP‑AES metal analyses). Laboratories often use these methods together to obtain a complete elemental profile of fresh and spent catalysts.

Keywords

UOP 924‑00; hydrocracking catalyst analysis; ICP‑AES; inductively coupled plasma; nickel; tungsten; sodium; aluminum; catalyst dissolution; alumina support; analytical method; catalyst QC.

FAQ

Q: What is this standard?

A: UOP 924‑00 is a UOP analytical method titled "Nickel, Tungsten, Sodium and Aluminum in Hydrocracking Catalysts by ICP‑AES" describing an ICP‑AES procedure for determining Ni, W, Na and Al in alumina or alumino‑silicate supported catalysts.

Q: What does it cover?

A: It covers sample decomposition and preparation, ICP‑AES measurement and calibration, concentration ranges from low ppm to high mass percent, and reporting/quality control practices. It also highlights limitations for catalysts with certain alumina phases and notes that spent catalysts may be analyzed after suitable pretreatment.

Q: Who typically uses it?

A: Catalyst manufacturers, refinery and petrochemical QC and analytical labs, external testing laboratories and researchers working on catalyst formulation and troubleshooting. Analysts performing multi‑element ICP‑AES analysis for process control or incoming inspection commonly rely on this method.

Q: Is it current or superseded?

A: The document is published under the designation UOP 924‑00 and is listed as active with a publication/update date shown as 29 July 2002 in catalog listings; users should check with the publisher (UOP) or authorized distributors for any newer revisions or withdrawn/replaced notices before relying on it for compliance purposes.

Q: Is it part of a series?

A: Yes — it is one of a suite of UOP methods for catalyst and hydrocarbon analysis. Neighboring methods include other multi‑element ICP methods and specialized catalyst analyses (for example UOP 925, UOP 926 and related UOP/ASTM catalog entries). Laboratories often use multiple UOP methods to obtain a complete elemental and compositional picture.

Q: What are the key keywords?

A: ICP‑AES, nickel, tungsten, sodium, aluminum, hydrocracking catalyst, alumina support, catalyst analysis, UOP 924‑00.